| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| 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. |
aerobiosis aer·o·bi·o·sis (âr'ō-bī-ō'sĭs)
n.
Life sustained by an organism in the presence of air or oxygen.