(pharmacology) Used to form names of drugs with a chiral center in the S configuration.

plural of a** / plural of a**e

(rare) Alternative form of e's.

Pronunciation spelling of is.

Alternative form of ess (letter 's') in compounds such as "es-hook".

Initialism of environmental science. / Initialism of emergency services. / Initialism of engineering sample.

Initialism of Espírito Santo.

plural of E

that end in "(t)ch" (only when pronounced as [tʃ]) — glitch → glitches (but psych → psychs) / that end in "(j)j" — hajj → hajjes ("j" is only final in loan words raj, hajj)

that end in "(t)ch" (only when pronounced as [tʃ]) — impeach → impeaches (but psych → psychs) / that end in "(s)s" — miss → misses / that end in "x" — tax → taxes / that end in "(z)z" — fizz → fizzes