Word Study
hypo
CIDE DICTIONARY
hypo, n.
Hypochondria. [1913 Webster]
hypo, n. [Abbrev. from hyposulphite.].
Sodium hyposulphite, or thiosulphate, a solution of which is used as a bath to wash out the unchanged silver salts in a picture. [1913 Webster]
OXFORD DICTIONARY
hypo, n. Photog. the chemical sodium thiosulphate (incorrectly called hyposulphite) used as a photographic fixer.
hypo, n. (pl. -os) colloq. = HYPODERMIC n.
Etymology
abbr.
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