(intransitive) To change one's clothes to prepare for outdoors activities, such as physical education; to be wearing clothes appropriate for such activities.

A particular steroid glycoside.

simple past tense and past participle of conceptualize

A horny, sulfur-containing protein, related to keratin, that forms the skeletal structure of certain classes of sponges. A proteinaceous compound of which the spicules in Demospongiae are composed.