|a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.|
|the offspring of a zebra and a donkey.|
Any of several branches of science, such as biology, medicine, and ecology, that study the structural and functional organization of living organisms and their relationships to each other and the environment. Compare physical science.