Arteriosclerosis \Ar*te`ri*o*scle*ro"sis\ ([aum]r*t[=e]`r[i^]*[-o]*skl[-e]*r[=o]"s[i^]s), n. [Gr. 'arthri`a artery + sclerosis.]

(Med.) Abnormal thickening and hardening of the walls of the arteries, esp. of the intima, occurring mostly in old age. -- Ar*te`ri*o*scle*rot"ic, a.

Source: Webster's Revised Unabridged Dictionary (1913)