Melancholy; a fit of ‘hypochondria’; a morbid depression.
1837 Abraham Lincoln: Tell your sister I dont want to hear any more about selling out and moving. That gives me the hypo whenever I think of it. (Letter to Mary S. Owens, May 7. 1837, Collected Works of Abraham Lincoln. Volume 1.
A hypochondriac.
Sodium thiosulphate, a photographic fixing agent.
A hypoglycaemia attack in a person with diabetes.
The substance sodium hyposulfite.
A hypodermic syringe.
Hypothecation.
(in the study of law) A hypothetical case.
A hypomelanistic snake.