Es

WordReference Random House Unabridged Dictionary of American English © 2026

Es ,[Symbol, Chem.]

1. Chemistry einsteinium.

-es¹ ,

1. a plural suffix occurring in loanwords from Greek:
   Hyades.

• Greek -es

-es² ,

1. var. of -s ² in verbs ending in s, z, ch, sh, or post-consonantal y: passes;
   buzzes;
   pitches;
   dashes;
   studies.

-es³ ,

1. var. of -s ³ in nouns ending in s, z, ch, sh, or post-consonantal y, and in nouns in f with v in the plural:
   losses;
   riches;
   ashes;
   babies;
   sheaves.

E.S. ,

1. Education Specialist.

Collins Concise English Dictionary © HarperCollins Publishers::

Es symbol:chemical

1. einsteinium

Collins Concise English Dictionary © HarperCollins Publishers::

-es suffix

1. for nouns ending in ch, s, sh, z, postconsonantal y, for some nouns ending in a vowel, and nouns in f with v in the plural, a variant of -s1: ashes, heroes, calves
2. : preaches, steadies, echoes

Collins Concise English Dictionary © HarperCollins Publishers::

-s, -es suffix

1. forming the plural of most nouns: boys, boxes

Etymology: from Old English -as, plural nominative and accusative ending of some masculine nouns

-s, -es suffix

1. forming the third person singular present indicative tense of verbs: he runs, she washes

Etymology: from Old English (northern dialect) -es, -s, originally the ending of the second person singular