n. 曙红色染料

[化] 曙红; 酸性曙红; 四溴荧光素

[医] 曙红, 伊红

[ noun ]
a red fluorescent dye resulting from the action of bromine on fluorescein; used in cosmetics and as a biological stain for studying cell structures
<noun.substance>

Eosin \E"o*sin\, n. [Gr. ? dawn.] (Chem.)
A yellow or brownish red dyestuff obtained by the action of
bromine on fluoresce["i]n, and named from the fine rose-red
which it imparts to silk. It is also used for making a fine
red ink. Its solution is fluorescent.