HYPO

hypo, sodium thiosulphate, sodium thiosulfate

(noun) a compound used as a fixing agent in photographic developing

Source: WordNet® 3.1

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Etymology

Noun

hypo (countable and uncountable, plural hypos)

(obsolete) Melancholy; a fit of ‘hypochondria’; a morbid depression.

(slang) A hypochondriac.

(photography) sodium thiosulphate, a photographic fixing agent.

(slang) A hypoglycaemia attack in a person with diabetes.

(informal) The substance sodium hyposulfite.

(slang) A hypodermic syringe.

(slang, finance, British) Hypothecation.

(informal, in the study of law) A hypothetical case.

(informal, zoology) A hypomelanistic snake.

Source: Wiktionary

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Hy"po-. Etym: [Gr. sub. See Sub-.]

1. A prefix signifying a less quantity, or a low state or degree, of that denoted by the word with which it is joined, or position under or beneath.

2. (Chem.)

Definition: A prefix denoting that the element to the name of which it is prefixed enters with a low valence, or in a low state of oxidization, usually the lowest, into the compounds indicated; as, hyposulphurous acid.

Hy"po, n.

Definition: Hypochondria. [Colloq.]

Hy"po, n. Etym: [Abbrev. from hyposulphite.] (Photog.)

Definition: Sodium hyposulphite, or thiosulphate, a solution of which is used as a bath to wash out the unchanged silver salts in a picture. [Colloq.]

Source: Webster’s Unabridged Dictionary 1913 Edition

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