septate

From septum +‎ -ate (adjective-forming suffix).

septate (not comparable)

1. Of, pertaining to, or divided by a septum.
   • 2010, Helen Gwynne-Vaughan, Fungi: Ascomycetes, Ustilaginales, Uredinales, page 54:

     Ascodesmis is a third type which might be derived either directly or through the erysiphaceous type from an endomycetous ancestor; the antheridium and oogonium are but little differentiated, but the latter is furnished with a trichogyne and becomes septate after fertilization; the ascogenous hyphae are few and the sheath simple.

From septum +‎ -ate (verb-forming suffix) or back-formation from septation.

septate (third-person singular simple present septates, present participle septating, simple past and past participle septated)

1. To form a septation.

• Pattees