Webster's Revised Unabridged Dictionary · 1913

Frequency

Frequency , noun

[Latin frequentia numerous attendance, multitude: compare French fréquence. See Frequent.]

1.
The condition of returning frequently; occurrence often repeated; common occurence; as, the frequency of crimes; the frequency of miracles.
The reasons that moved her to remove were, because Rome was a place of riot and luxury, her soul being almost stifled with, the frequencies of ladies' visits. — Fuller
2.
A crowd; a throng. [Obsolete] — B. Jonson