phosphane

Century Dictionary and Cyclopedia

1. n. A light white powder obtained by the interaction of ammonia and phosphorus pentachlorid. Its composition is somewhat doubtful, but is probably represented by the formula P₃H₃N₆.

Wiktionary

1. n. chemistry phosphine, PH3
2. n. chemistry any of the higher hydrides of phosphorus having general formula PnHn+2