a term formerly used to mean taking on the gender role of the opposite sex
(counterpoint) a variation of a melody or part in which ascending intervals are replaced by descending intervals and vice versa
(genetics) a kind of mutation in which the order of the genes in a section of a chromosome is reversed
the layer of air near the earth is cooler than an overlying layer
a chemical process in which the direction of optical rotation of a substance is reversed from dextrorotatory to levorotary or vice versa
abnormal condition in which an organ is turned inward or inside out (as when the upper part of the uterus is pulled into the cervical canal after childbirth)
being in effect or operation; "de facto apartheid is still operational even in the `new' African nations"- Leslie Marmon Silko; "bus service is in operation during the emergency"; "the company had several operating divisions"
of or intended for or involved in military operations
pertaining to a process or series of actions for achieving a result; "operational difficulties"; "they assumed their operational positions"
the skilled practice of a practical occupation; "he learned his trade as an apprentice"
the commercial exchange (buying and selling on domestic or international markets) of goods and services; "Venice was an important center of trade with the East"; "they are accused of conspiring to constrain trade"
the business given to a commercial establishment by its customers; "even before noon there was a considerable patronage"
exchange or give (something) in exchange for
turn in as payment or part payment for a purchase; "trade in an old car for a new one"
engage in the trade of; "he is merchandising telephone sets"
be traded at a certain price or under certain conditions; "The stock traded around $20 a share"