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ace a playing card or die face that bears only one spot. [7 definitions]
-acea used in scientific names of zoological classes or orders.
-aceae used in scientific names of botanical families.
ace-high in poker, with an ace as the highest card, as in a straight or flush.
ace in the hole a resource that remains unrevealed or unused until a particular opportunity arises.
-aceous of the nature of or resembling. [3 definitions]
acepromazine an oily orange compound used to immobilize large animals, to stop nausea, and to tranquilize.
acerbate to give a sour or bitter taste to. [3 definitions]
acerbic sharp, sour, or harsh in manner, tone, or the like. [2 definitions]
acerbity sharpness or severity of temper or manner. [2 definitions]
acetabulum the cup-shaped socket of the hipbone into which the top of the thighbone fits. [2 definitions]
acetal a colorless, flammable, volatile liquid compound used as a solvent, in perfumes and cosmetics, in organic synthesis, and to induce hypnosis. [2 definitions]
acetamide a colorless water-soluble crystalline solid used esp. in forming organic compounds.
acetaminophen a drug used to relieve pain and reduce fever but which does not significantly reduce inflammation.
acetanilide a white crystalline organic powder produced by the effect of acetic acid on aniline and used to relieve pain and fever.
acetate a chemical compound derived from acetic acid. [2 definitions]
acetic pertaining to, containing, or producing vinegar or acetic acid.
acetic acid a clear, colorless, sour liquid compound that is the main ingredient in vinegar and is used in solvents, acetate fibers, plastics, and other products.
acetify to turn into or become vinegar or acetic acid.
aceto- pertaining to or containing acetic acid or acetyl.
acetone a chemical compound, highly volatile and flammable, used in making compounds and as a solvent, as in paints.