(chiefly zoology) A small opening or orifice. / (zoology, obsolete) One of the suckers on the head of a tapeworm. / (zoology) The main opening in a sponge from which water is expelled.

(evolutionary theory) evolutionarily stable strategy / (electronics) Initialism of electronic switching system. / (electrical) Abbreviation of energy storage system.

plural of germen

plural of dysentery