Category:Per-

Per-. Etym: [see per.]

1. A prefix used to signify through, throughout, by, for, or as an Intensive as perhaps, by hap or chance; perennial, that lasts Throughout the year; perforce, through or by force; perfoliate, Perforate; perspicuous, evident throughout or very evident; perplex, Literally, to entangle very much.

2. (chem.)

Defn: originally, denoting that the element to the name of which it Is prefixed in the respective compounds exercised its highest Valence; now, only that the element has a higher valence than in Other similar compounds; thus, barium peroxide is the highest oxide Of barium; while nitrogen and manganese peroxides, so-called, are not The highest oxides of those elements.