A principle in biology stating that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences.

The equilibrium of allele and genotype frequencies postulated by the Hardy-Weinberg principle.

A suburb in the Metropolitan Borough of Manchester, Greater Manchester, England (OS grid ref SJ8193).

False or sarcastic laughter.

plural of half-hardy

(number theory) A method used to compute the residues about zero for the generating function of a series, as part of proving asymptotic behaviour of the series.

plural of hardyhead

(Australia) Any of the sundry species of fish of the family Atherinidae found near Australia;

(mineralogy) A rare purple fluorescent silicate mineral.

Reminiscent of the writings of Thomas Hardy (1840–1928), of which the best known are tragic novels.