English Vocabulary Flash Cards @ englishpdf.com and englishteststore.com File 162 difference (n) Dissimilarity in any respect differentia (n) Any essential characteristic of a species by reason of which it differs from other species differential (adj) Distinctive differentiate (v) To acquire a distinct and separate character diffidence (n) Self-distrust diffident (adj) Affected or possessed with selfdistrust diffusible (adj) Spreading rapidly through the system and acting quickly diffusion (n) Dispersion