Pen·to·san n. Also -sane. Chem. One of a class of substances (complex carbohydrates widely distributed in plants, as in fruits, gums, woods, hay, etc.) which yield pentoses on hydrolysis.
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sane
adj 1: mentally healthy; free from mental disorder; "appears to be
completely sane" [ant: insane]
2: marked by sound judgment; "sane nuclear policy" [syn: reasonable]