释义 |
pen·e·trant I. \-rənt\ adjective Etymology: Middle French or Latin; Middle French penetrant, from Latin penetrant-, penetrans, present participle of penetrare to penetrate : that penetrates : penetrating < a penetrant wind > < a penetrant fumigant > II. noun (-s) : one that penetrates or is capable of penetrating: as a. : a large barbed nematocyst designed to pierce the body of the prey and inject a paralyzing substance b. : a penetrating agent : a surface-active agent having high penetrating power — compare wetting agent |