There are 3 definitions of hypo in English:

hypo1

Line breaks: hypo
Pronunciation: /ˈhʌɪpəʊ
 
/

noun

[mass noun] Photography
The chemical sodium thiosulphate (formerly called hyposulphite) used as a photographic fixer.
More example sentences
  • I use four teaspoons of hypo (sodium thiosulfate) in a liter of water and add a quarter-ounce of solution B.
  • Salted paper is usually fixed in a 10% solution of hypo (100 grams of sodium thiosulfate in 1 liter of water) for 10 minutes.
  • The print was toned for 2 minutes in selenium toner, followed by a 3 minute wash, 3 minutes in hypo clearing agent, and a 1 hour wash.

Origin

mid 19th century: abbreviation of hyposulphite.

Definition of hypo in:

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Word of the day antebellum
Pronunciation: ˌantɪˈbɛləm
adjective
occurring or existing before a particular war…

There are 3 definitions of hypo in English:

hypo2

Line breaks: hypo
Pronunciation: /ˈhʌɪpəʊ
 
/

noun (plural hypos)

informal term for hypodermic.
More example sentences
  • He gyrated a little after the hypo injected, then tossed it over his shoulder.
  • He pressed mainline sedation hypos against our skin.
  • There is also a variety of equipment to use including med-kits, fire extinguishers, blood-test hypos, and flares.

Origin

early 20th century: abbreviation.

Definition of hypo in:

There are 3 definitions of hypo in English:

hypo3

Line breaks: hypo
Pronunciation: /ˈhʌɪpəʊ
 
/

noun (plural hypos)

informal
An attack of hypoglycaemia.
More example sentences
  • I am now very sympathetic to the plight of the diabetic; I wouldn't want to have to suffer a hypo attack on a regular basis.
  • There are times when he seems to be having a hypo where he clearly cannot concentrate, when he cannot focus.
  • Faulty carbohydrate metabolism by the liver will cause blood glucose to radically rise or fall causing either hypo or hyperglycemia.

Origin

late 20th century: abbreviation.

Definition of hypo in: