ヘンイコシル酸さんMeanings1nounheneicosylic acidchemistryA saturated fatty acid with 21 carbon atoms. Technical term used in chemistry and biochemistry.ヘンイコシル酸さんは炭たん素そ数すう21の飽ほう和わ脂し肪ぼう酸さんである。Heneicosylic acid is a saturated fatty acid with 21 carbon atoms.