(topology) A knot that has a knot diagram in which, in traveling along the knot, one passes through intersections alternatingly: over, under, over, under, etc.

(biology) Each of the two forms of an organism whose life cycle involves alternation of generations, or the fact of such alternation occurring in a given organism.

present participle of altercate

plural of alternating current

plural of alternate generation

(algebra) An algebra such that every subalgebra generated by two elements is associative.

plural of alternative hypothesis

sense of difference

(archaic) second-person singular simple present form of alter

One who altercates.