stop consonant: a consonant produced by stopping the flow of air at some point and suddenly releasing it
obstruent: a consonant that is produced with a partial or complete blockage of the airflow from the lungs through the nose or mouth
spermatophyta: seed plants; comprises the Angiospermae (or Magnoliophyta) and Gymnospermae (or Gymnospermophyta); in some classification systems Spermatophyta is coordinate with Pteridophyta (spore producing plants having vascular tissue and roots) and Bryophyta (spore producing plants lacking vascular tissue and roots)