(Australia) A type of snapper native to the western Pacific, Symphorus nematophorus, which is a commercial food fish in some areas, but ciguatoxic in others.

(medicine, cardiology) Initialism of heart failure with mid-range ejection fraction.

plural of matric

(anatomy) A structure within the temporal lobe of the human brain, believed to be involved in colour processing and the recognition of faces, bodies, and words.