What is "catamenial"

Catamenial \Cat`a*me"ni*al\ (k[a^]t`[.a]*m[=e]"n[i^]*al), a. [Gr. katamh`nios monthly; kata` down, back, again + mh`n month.] Pertaining to the catamenia, or menstrual discharges.

a. Of or relating to the menses or menstruation

adj. of or relating to menstruation or the menses; "menstrual period" [syn: menstrual]