ArticleslgStudy

astronomy

Kenoma

Kenoma is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Kenoma rather than just read about it. In short: In Gnosticism, kenoma (kenoma, κένωμα) is the concept of emptiness that corresponds to the lower world of phenomena, as opposed to the concept of pleroma, or fullness, which corresponds to the Platonic world of ideal forms. Kenoma was used by the mid-2nd century Gnostic thinker and preacher Valentinius, who was among the early Christians who attempted to align Christianity with Middle Platonism.

Kenoma — main illustration
Kenoma — illustration

Key takeaways

  • Kenoma belongs to astronomy; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Kenoma to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Kenoma from memory before moving on to harder problems.

Reference excerpt

In Gnosticism, kenoma (kenoma, κένωμα) is the concept of emptiness that corresponds to the lower world of phenomena, as opposed to the concept of pleroma, or fullness, which corresponds to the Platonic world of ideal forms. Kenoma was used by the mid-2nd century Gnostic thinker and preacher Valentinius, who was among the early Christians who attempted to align Christianity with Middle Platonism. Employing a third concept of cosmos, what is manifest, Valentinian initiates could explain scripture in light of these three aspects of correlated existence.

In Gnosticism The pleroma is the abode of the Æons . . . they are, or they comprise, the eternal ideas or archetypes of the Platonic philosophy. . . . Separated from this celestial region by Horos . . . or Boundary . . . lies the ‘kenoma’ or ‘void’—the kingdom of this world, the region of matter and material things, the land of shadow and darkness. Here is the empire of the Demiurge or Creator, who is not a celestial Æon at all, but was born in this very void over which he reigns. Here reside all those phenomenal, deceptive, transitory things, of which the eternal counterparts are found only in the pleroma. . . . All things are set off one against another in these two regions: just as The swan on still St Mary’s lake Floats double, swan and shadow. Not only have the thirty Æons their terrestrial counterparts; but their subdivisions also are represented in this lower region. The kenoma too has its ogdoad, its decad, its dodecad, like the pleroma. There is one Sophia in the supramundane region, and another in the mundane; there is one Christ who redeems the Æons in the spiritual world, and a second Christ who redeems mankind, or rather a portion of mankind, in the sensible world. There is an Æon Man and another Æon Ecclesia in the celestial kingdom, the ideal counterparts of the Human Race and the Christian Church in the terrestrial. . . . The topographical conception of the pleroma moreover is carried out in the details of the imagery. The second Sophia, called also Achamoth, is the desire, the offspring, of her elder namesake, separated from her mother, cast out of the pleroma, and left ‘stranded’ in the void beyond, being prevented from returning by the inexorable Horos who guards the frontier of the supramundane kingdom. The ancient Greek term for emptiness or void (kenoma), as pertaining to Theodotus's exegesis of Gospel of John chapter 1 verse 3, is described in The Excerpta ex Theodoto of Clement of Alexandria.

Hysterema Elsewhere, the usual antithesis to Pleroma is not Kenoma, but Hysterema (ὑστέρημα). As the system is reported by Hippolytus (vi. 31, p. 180) this word is used as the complement of the word Pleroma, denoting all that is not included in the meaning of the latter word. Thus the Horos or boundary is described as separating the Hysterema from the Pleroma, itself partaking of the nature of both; but preserving all inside fixed and immovable by permitting nothing from without to enter. We can understand in the same sense the passage in Epiphanius, where the same name is given to the Demiurge; for it appears in the case of the word Hebdomas that the Valentinians gave to the Demiurge the name of the realm over which he ruled, and from which he had his origin. Marcus speaks of the Demiurge as karpos hysterematos Marcus would seem to have used the word Hysterema, in the sense already explained, to denote the region outside the Pleroma, where, in his usual way of finding mysteries in numbers, he regards the former region as symbolised by the numbers up to 99 counted on the left hand, the latter by 100 counted on the right hand. As Marcus uses the word Pleroma in the plural number, so he may have used Hysterema also in the plural number to denote the powers belonging to these regions respectively. But it seems to us likely that the assertion that Marcus counted a second or a third Hysterema is but an inference drawn by Irenaeus himself, from the fact that he found the name karpos hysterematos applied not only to the Demiurge, but to his mother, Sophia Achamoth. Irenaeus ordinarily uses the word, usually rendered labes by the old Latin translator, in no technical sense, but with the general meaning of defect, commonly joining it with the words agnoia and pathos. The word Hysterema is found also in Excerpt. Theod. 2, 22, in the latter passage in a technical sense; but the context does not enable us to fix its meaning. Hysterema is said by Epiphanius to have been used as a technical word by Basilides.

See also Dyad (Greek philosophy) Tzimtzum

References

Works cited Casey, R. P., ed. (1934). The Excerpta ex Theodoto of Clement of Alexandria. London.{{cite book}}: CS1 maint: location missing publisher (link) Lightfoot, Joseph Barber (1890). Saint Paul's Epistles to the Colossians and to Philemon. London: Macmillan. Turner, John Douglas (2001). Sethian Gnosticism and the Platonic Tradition. Presses Université Laval. pp. 11, 35–36. ISBN 978-2-7637-7834-1. This article incorporates text from this source, which is in the public domain: Salmon, George (1882). "Hysterema". In Smith, William; Wace, Henry (eds.). A Dictionary of Christian Biography, Literature, Sects and Doctrines. Vol. III. London: John Murray. p. 190.

Further reading Pagels, Elaine (1989). The Johannine Gospel in Gnostic Exegesis. Atlanta: Society of Biblical Literature.

Worked examples

Example 1 — a first encounter with Kenoma

Start with the simplest possible case. Write down what Kenoma claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Kenoma before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Kenoma ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Kenoma

In research
Kenoma appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Kenoma in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Kenoma is common in secondary-school and first-year university syllabi. It links to neighbouring topics Gnostic cosmology, Middle Platonism, so understanding it makes those chapters shorter.
In everyday life
Look for Kenoma outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Kenoma in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Kenoma means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Kenoma out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Kenoma in simple terms?

In Gnosticism, kenoma (kenoma, κένωμα) is the concept of emptiness that corresponds to the lower world of phenomena, as opposed to the concept of pleroma, or fullness, which corresponds to the Platonic world of ideal forms. Kenoma was used by the mid-2nd century Gnostic thinker and preacher Valenti…

Why does Kenoma matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Kenoma?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Kenoma.

Tags

  • Gnostic cosmology
  • Middle Platonism

Keep exploring