| accidental |
not part of the basic nature of a thing; secondary; incidental. [2/5 definitions] |
| acclamation |
enthusiastic applause; loud expression of approval. [2 definitions] |
| accursed |
worthy of a curse; hateful. [1/2 definitions] |
| acetal |
any of a class of chemicals in which aldehydes are compounded with alcohol. [1/2 definitions] |
| aceto- |
pertaining to or containing acetic acid or acetyl. |
| acetylcholine |
a form of this compound used in medicine for its ability to decrease blood pressure and cause muscular movement in such organs as the alimentary canal. [1/2 definitions] |
| Achilles tendon |
the large tendon that connects the calf muscles to the back of the heel. |
| acidic |
containing a high proportion of acid-forming silica, as rocks or soil. [1/3 definitions] |
| acoustic |
intended to modify or improve sound quality, as a building material. [1/3 definitions] |
| acquaintance |
a person one has met but does not know well. [1/3 definitions] |
| acquirement |
something acquired, such as knowledge or skill. [1/2 definitions] |
| acre |
(pl.) a large amount of land, or land in general. [1/2 definitions] |
| activated carbon |
a form of very porous and thus very absorbent carbon, produced by heating charcoal so as to empty out contained gases, and used to absorb other gases, recover solvents, deodorize, and the like; activated charcoal. |
| active |
having effect or able to produce effect, as a chemical. [1/7 definitions] |
| acupressure |
a medical technique that seeks to stop bleeding by placing needles in the tissue next to a bleeding vessel. [1/2 definitions] |
| acute |
very critical; crucial. [1/7 definitions] |
| adieu |
good-bye; farewell. [1/2 definitions] |
| adios |
good-bye; farewell. |
| adjective |
relating to or functioning as an adjective; adjectival. [1/2 definitions] |
| adjutant general |
(cap.) in the U.S. Army, the chief administrative officer, a major general who oversees personnel. [1/3 definitions] |
| admiralty |
the authority of an admiral. [1/3 definitions] |