sigmate

sigma +‎ -ate

sigmate (comparative more sigmate, superlative most sigmate)

1. Shaped like the Greek letter sigma.

• sigmoid

sigmate (third-person singular simple present sigmates, present participle sigmating, simple past and past participle sigmated)

1. (transitive, grammar) To modify (a Greek word) by adding sigma, or by changing another letter to sigma.

• gamiest, gemista