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O: alternatives and connections

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26,102 words currently have published synonym-style alternatives
90,593 searchable synonym connections
350,924 published thesaurus relationships of every type
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O

Among the ancients, O was a mark of triple time, from the notion that the ternary, or number 3, is the most perfect of numbers, and properly expressed by a circle, the most perfect figure.

50 useful connections shown 8 reviewed relationships and 42 broader connections.
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Reviewed alternatives and contrasts

These links were deliberately created. Use the interchangeability score and guidance to judge whether a word will work in your sentence.

Broader term 3

Element 76% connected

One of the simplest or essential parts or principles of which anything consists, or upon which the constitution or fundamental powers of anything are…

oewn 2023 0% interchangeable

Open English WordNet identifies the related term as a broader lexical category for at least one sense.

Gas 76% connected

An aeriform fluid; -- a term used at first by chemists as synonymous with air, but since restricted to fluids supposed to be permanently elastic, as…

oewn 2023 0% interchangeable

Open English WordNet identifies the related term as a broader lexical category for at least one sense.

Letter 76% connected

One who lets or permits; one who lets anything for hire.

oewn 2023 0% interchangeable

Open English WordNet identifies the related term as a broader lexical category for at least one sense.

Containing substance 3

Air 70% connected

The fluid which we breathe, and which surrounds the earth; the atmosphere. It is invisible, inodorous, insipid, transparent, compressible, elastic, a…

oewn 2023 0% interchangeable

Open English WordNet identifies the related term as a containing group, substance or whole.

Ozone 70% connected

A colorless gaseous substance (O/) obtained (as by the silent discharge of electricity in oxygen) as an allotropic form of oxygen, containing three a…

oewn 2023 0% interchangeable

Open English WordNet identifies the related term as a containing group, substance or whole.

Water 70% connected

The fluid which descends from the clouds in rain, and which forms rivers, lakes, seas, etc.

oewn 2023 0% interchangeable

Open English WordNet identifies the related term as a containing group, substance or whole.

Substance part 1

Selenite 70% connected

A salt of selenious acid.

oewn 2023 0% interchangeable

Open English WordNet identifies the related term as a member, substance or component part.

Synonym 1

Oxygen 92% connected

A colorless, tasteless, odorless, gaseous element occurring in the free state in the atmosphere, of which it forms about 23 per cent by weight and ab…

oewn 2023 68% interchangeable

Open English WordNet places these words in at least one shared synset. They share a lexicalised sense, but context, register and collocation should still be checked before substitution.

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Words connected by meaning

Their definitions overlap or refer to similar ideas. Use these to widen your search, then compare the exact meanings.