alkapton al·kap·ton or al·cap·ton (āl-kāp'tŏn', -tən)
n.
See homogentisic acid.
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| 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. |