(biology, medicine) Pertaining to or causing mydriasis (the dilation of the pupil of the eye).

(pharmacology) A drug that causes mydriasis.

plural of mydriatic

(medicine) The condition of having abnormally large and dilated pupils due to illness or narcotics, particularly stimulants such as methamphetamine, cocaine, etc.

plural of mydriasis

(chemistry) A ptomaine obtained from putrid flesh and herring brines.

plural of mydatoxin

(organic chemistry) A poisonous amido acid, C₆H₁₃NO₂, originally obtained from decaying horseflesh and similar in action to curare.

Obsolete form of midst.

Obsolete form of midst.