- einsteinium.
- a plural suffix occurring in loanwords from Greek: Hyades.
- variant of -s2 in verbs ending in s, z, ch, sh, or post-consonantal y: passes; buzzes; pitches; dashes; studies.
- variant of -s3 in nouns ending in s, z, ch, sh, or post-consonantal y, and in nouns ending in f with v in the plural: losses; fuzzes; riches; ashes; babies; sheaves.
- Education Specialist.
- Spain
- einsteinium
- El Salvador (international car registration)
- 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 -s 1 ashes; heroes; calves
- for verbs ending in ch, s, sh, z, postconsonantal y, or a vowel, a variant of -s 1 preaches; steadies; echoes