at- / Indo-European roots

at-

To go; with Germanic and Latin derivatives meaning a year (conceived as "the period gone through, the revolving year").

Suffixed form *at-no-. annals, annual, annuity; anniversary, biennium, decennium, millennium, perennial, quadrennium, quinceañera, quindecennial, quinquennium, septennial, sexennial, superannuated, triennium, vicennial from Latin annus, year.

[Pokorny at- 69.]



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