|a chattering or flighty, light-headed person.|
|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.|
dehydrogenase de·hy·dro·gen·ase (dē'hī-drŏj'ə-nās', -nāz', dē-hī'drə-jə-)
An enzyme that catalyzes the removal and transfer of hydrogen from a substrate in an oxidation-reduction reaction.