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a trivalent metallic element of the rare earth group; occurs with yttrium

a trivalent metallic element of the rare earth group; occurs with yttrium

The chemical symbol of erbium, also written simply E.

A termination of many English nouns, converting the word to which it is added into a noun of agency. It is the Teutonic form equivalent to the Latin -or, and native words may be roughly distinguished from words of Latin origin by this distinction; as, hearer, learner, doer, teacher, from auditor, instructor, factor, doctor. It was formerly a sign of the masculine gender-stre, -ster indicating the feminine; thus weaver, baker, malter, singer, brewer were masculine; webster, bakester (baxter), maltster, songster, brewster, feminine. In spinner and spinster the distinction is still to some extent observed. Generally, however, the termination does not indicate gender in any way, some nouns in -er signifying a person or thing indifferently, as ruler, heater, grater, poker. Added to names of places it sometimes signifies an inhabitant of, or one that belongs to a place, as Londoner, Berliner, New Yorker; though the terminations ite, an, and some others are fast supplanting er, in the United States, especially: the sign of the comparative degree of adjectives, and skin to Latin comparative termination -or, Gr. -er in -eros: an affix to verbs giving them a frequentative, and probably a diminutive sense; as, swag, swagger; spit, sputter; fret, fritter; pat, patter; wend, wander.

Chemical symbol for the element erbium.

The termination of many English words, and the Teutonic form of the Latin or; it is indiscriminately applied to men or things, as a farmer grater; at the end of names of places, it signifies a person belonging to the place, as a Londoner.