GMAT Vocabulary Flash Cards @ englishpdf.com and englishteststore.com File 491 perceptible (adj) Cognizable perception (n) Knowledge through the senses of the existence and properties of matter or the external world perceptive (adj) full of insight; aware percipience (n) The act of perceiving percipient (n) One who or that which perceives percolate (v) To filter percolator (n) A filter percussion (n) The sharp striking of one body against another