(organic chemistry) The unsaturated fatty acid cis-icos-11-enoic acid (an isomer of gadoleic acid) present in fish and vegetable oils

(biology) A membranous prokaryotic organelle, containing mineral crystals, present in magnetotactic bacteria

(transitive) To make wrinkles in; to cause to have wrinkles. / (intransitive) To pucker or become uneven or irregular. / (intransitive, of skin) To develop irreversibly wrinkles; to age.

(organic chemistry) A diterpenoid alkaloid present in the roots of Aconitum carmichaelii