alternus

   alternus adj.    [alter], one after the other, alternate, in turn, reciprocal: ex duabus orationibus capita alterna recitare: alternis trabibus ac saxis, beams alternating with stones, Cs.: pes, H.: alterni si congrediamur, every other one of us, V.: in hoc alterno pavore, i. e. panic alternately in either army, L.: fratrem alternā morte redimere, by dying and reviving with him in turn, V.: alternis paene verbis laudans, with almost every other word, L.: amant alterna Camenae, responsive song, V.: alternis aptum sermonibus, dialogue, H.—Of verses, alternate hexameter and pentameter, elegiac: pedes alternos esse oportebit: canere alterno carmine, O. — In courts the parties took turns in challenging judges; hence, alterna consilia reicere, to reject by turns: reiectio iudicum alternorum.

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alterna, alternum ADJ

alternate, one after the/every other, by turns, successive; mutual; reciprocal