(biology) the field of science concerned with processes of communication and control (especially the comparison of these processes in biological and artificial systems)
not tractable; difficult to manage or mold; "an intractable disposition"; "intractable pain"; "the most intractable issue of our era"; "intractable metal"
a trap for birds or small mammals; often has a slip noose
strings stretched across the lower head of a snare drum; they make a rattling sound when the drum is hit
a surgical instrument consisting of wire hoop that can be drawn tight around the base of polyps or small tumors to sever them; used especially in body cavities
a methodical examination or review of a condition or situation; "he made an audit of all the plants on his property"; "an energy efficiency audit"; "an email log audit"
attend academic courses without getting credit
examine carefully for accuracy with the intent of verification; "audit accounts and tax returns"