octostiate

\(ˈ)äk|tästēə̇t, -ēˌāt\ adjective

Etymology: New Latin Octostiatae, from octa- + -ostiatae (from feminine plural of -ostiatus having a specified number of ostia, from ostium + Latin -atus -ate

1. : having eight ostia

2. : belonging to a group of spiders having eight cardiac ostia