Oxygen at a pressure that is above one atmosphere.high-pressure oxygen
Hyper vs. HypoLet’s start from the top: Hyper- is a prefix that means excess or exaggeration, while hypo- is another prefix that means under or beneath. Both hyper and hypo are usually used as prefixes, which are elements or partial words added to the beginning of a base word to modify its meaning. Hyper is derived from the Greek word for over, and hypo is a Greek …
Irreparable vs. UnrepairableThe words irreparable and unrepairable are synonyms that mean unable to be fixed. Both irreparable and unrepairable are adjectives (words that modify nouns by describing an aspect of them). Irreparable was first used between the late 1300s to early 1400s. It’s a Middle English word derived from the Latin term, irreparabilis, meaning not able to be recovered. Unrepairable is a related form of the verb …
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.