pentad

In the pentad of 1923-27, U. S. investors paid $34,806,783,000 for 36,965 different issues of bonds and stocks.

From Time Magazine Archive

An element having a valence of one is a monad; of two, a dyad; three, a triad; four, tetrad; five, pentad; six, hexad, etc.

From An Introduction to Chemical Science by Rufus Phillips Williams

The 'even' in the Sûtra is meant to intimate that the 'five five-people' can in no way mean the twenty-five categories, since there is no pentad of groups consisting of five each.

From The Vedanta-Sutras with the Commentary by Ramanuja — Sacred Books of the East, Volume 48 by George Thibaut

C. Wachsmuth.—The pentad arrangement in Dio and others.

From Dio's Rome, Volume 1 (of 6) An Historical Narrative Originally Composed in Greek during the Reigns of Septimius Severus, Geta and Caracalla, Macrinus, Elagabalus and Alexander Severus: and Now Presented in English Form by Cassius Dio

Five, or the pentad, is everything; it stops the power of poisons, and is dreaded by evil spirits.

From Three Thousand Years of Mental Healing by George Barton Cutten