Samples where caducous or its synonyms are used according to this definition

• most amphibians have caducous gills
• the caducous calyx of a poppy

Synonyms for caducous in the sense of this definition

• shed

(caducous is similar to ...) (of teeth, antlers, etc.) being shed at the end of a period of growth

(caducous belongs to category ...) the science that studies living organisms

• biological science
• biology