hypo

noun8

1. •
   (slang) A hypoglycaemia attack in a person with diabetes.
2. •
   (slang) A hypodermic syringe or injection.
3. •
   (slang) A hypochondriac.
4. •
   (informal) Sodium thiosulfate (also called hyposulfite of soda), a photographic fixing agent.
5. •
   (informal) A hypothetical case.
6. •
   (informal) A hypomelanistic snake.
7. •
   (UK, slang) Hypothecation.
8. •
   (no longer used) Melancholy; a fit of hypochondria; a morbid depression.

verb4

1. •
   To administer a hypodermic injection to.

   • Bacterium and virus count—as usual. Lots of it. Apparently not too dangerous. Not with every single soul hypoed and immunized and hormoned to his eyebrows. — 1956
2. •
   (slang) To have a hypoglycaemia attack.

   • My top lip tingles, and I'm clearly hypoing but I don't know what my sugar level is, it was 9.8 when I went to bed, which is fine. I've hypoed a lot lately. — 2019
3. •
   To stimulate or boost (the economy) by the injection of cash, such as with quantitative easing

   • In the last three peacetime years before the Vietnam War expenditures began to hypo the economy, 1961, 1962, and 1963, unemployment in those years averaged six percent. — 1971
4. •
   (figurative) To stimulate or boost, as if by administering a hypodermic injection. (Compare hype.)

noun1

1. •
   Abbreviation of hypothetical.