Punctum

pungk′tum, n. ( an at. ) a point, dot.— adjs. Punc′tūlate , -d .— ns. Punctūlā′tion ; Punc′tūle ; Punc′tūlum .— Punctum cæcum , the point of the retina from which the optic nerve fibres radiate, so called because impervious to light.