…choose someone or something from a group for special treatment…
…a chemical bond in which one pair of electrons is shared between two atoms…
…(of a gene or genetic sequence) present in a genome in only one copy…
…(of a file) having grooves cut in one direction only, not crossing each other…
…(of a horse) walk by moving both legs on each side in alternation, each foot falling separately…
…whisky unblended with any other malt…
…used to emphasize that every member of a group is included…
…(of an engine) having pressure applied only to one side of the piston…
…(of a gun) needing to be cocked by hand before it can be fired…
…denoting a test or experiment in which information that may bias the results is concealed from either tester or subject…
…(of an electronic device) designed for use with unbalanced signals and therefore having one input and one output terminal connected to earth…
