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Comprehensive
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abortifacient a drug or other agent used to cause abortion. [1/2 definitions]
advance man an agent or aide who takes care of publicity, security, and other arrangements in advance of the appearance of a politician, theater group, or the like.
agent provocateur (French) a secret agent who incites other people to commit acts that will subject them to punishment or prosecution, or who incites others to acts of rebellion or subversion; troublemaker.
agt. abbreviation of "agent," a person with authority to perform certain actions on behalf of another.
anesthesia a drug or other agent used to bring about unconsciousness or absence of pain. [1/2 definitions]
antihypertensive a drug or other agent that reduces hypertension. [1/2 definitions]
-ar2 one that acts as an agent or performs.
baking powder a powder containing sodium bicarbonate and an acidic substance, that serves as a leavening agent in baking by releasing carbon dioxide when mixed with water, thereby causing the dough to rise.
baking soda a white powder used as a leavening agent in baking, an antacid, a mouthwash, and a fire extinguisher; sodium bicarbonate.
bleach to make white or lighter in color by using a chemical agent or sunlight. [2/4 definitions]
boneblack the carbonized residue of heat-treated bones, used as a blacking pigment or decoloring agent.
booster shot an injection of an immunizing agent, given at some time after an original series of such injections, to maintain immunity.
borax a white substance found in naturally occurring borates and used as a cleansing or flushing agent, in the production of ceramics, and in tanning.
bromic acid a poisonous acid that is stable only in very dilute form and is used as an oxidizing agent.
buyer an agent who chooses and purchases goods for a store. [1/2 definitions]
calcium carbide a dark gray crystalline compound used as a dehydrating agent and a source of acetylene gas and calcium cyanimide.
calcium chloride a white crystalline compound, derived from calcium carbonate, that is used as a dehydrating agent, de-icer, and dust suppressant.
carbon black any of various finely divided forms of carbon obtained from the incomplete burning of natural gas or petroleum oil, and used to make ink, pigments, and rubber, and as a filtering agent.
catalysis an action initiated between persons or forces by an agent that remains unaffected. [1/2 definitions]
catalyst an agent that causes an interaction between persons or forces without being affected itself. [1/2 definitions]
cathartic a purgative agent, esp. a laxative. [1/2 definitions]