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Aden a former British colony and protectorate, now part of Yemen. [2 definitions]
adenine in chemistry, a crystalline base that is a constituent of nucleic acid in organs such as the pancreas and spleen.
adeno- gland.
adenoid (usu. pl.) a mass of tissue between the nose and the throat that, when swollen, can hinder breathing. [2 definitions]
adenoidal of or relating to the adenoids. [3 definitions]
adenoma a usu. benign tumor that starts in a gland or has a glandlike arrangement of cells.
adenosine an organic compound that is made up of adenine and ribose and found in nucleic acids, and that may be obtained as a white crystalline powder through the hydrolysis of yeast.
adept having great skill or ability; proficient. [2 definitions]
adequacy the state of being adequate.
adequate good enough or well enough suited for the situation or need; satisfactory. [3 definitions]
deux (French) of or for two, esp. in an intimate or private manner.
adhere to stick or cling firmly, as by gluing (usu. fol. by to). [3 definitions]
adherence the act or condition of adhering. [2 definitions]
adherent one who supports or follows a person, party, principle, or the like (usu. fol. by of). [3 definitions]
adhesion the act or condition of clinging or sticking. [4 definitions]
adhesive able or likely to adhere; clinging; sticky. [2 definitions]
adhesive bandage a small piece of cloth or plastic with a sticky material on one side. You use an adhesive bandage to cover a wound and keep it clean.
adhesive tape a strip of cotton, plastic, or other tape coated with a sticky material on one side, used esp. for attaching bandages.
ad hoc for this particular case, occasion, or purpose only; with respect only to this.
ad hominem to the man (Latin). Appealing to a personal interest, emotion, or prejudice rather than to rationality. [2 definitions]
adiabatic of, relating to, or denoting a process that occurs without loss or gain of heat, such as a change in the volume or pressure of the contents of a container.