What does "punctum" mean?

Punctum: A point. Punctum cæcum. Etym: [L., blind point.] (Anat.) Same as Blind spot, under Blind. -- Punctum proximum, near point. See under Point. -- Punctum remotum, far point. See under Point. -- Punctum vegetationis Etym: [L., point of vegetation] (Bot.), the terminal cell of a stem, or of a leaf bud, from which new growth originates.

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