pore

A minute aperture or pa ageway in a structure; especially, a fine tubular opening, absorbent p's. Of the early physiologists, the minute openings thought to be the channels through which nutritive fluids were absorbed into the general circulation, exhalant p's. Of the older physiologists, the small openings supposed to exist in the skin for the transmi ion of excrementitious fluids. p's of the skin. The orifices of the cutaneous follicles, sweat p. The external orifice of a sweat duct (see sudoriferous glands, under gland). [Lat., por us; Gr., poros.']