noun (plural puncta /-tə/)technical
1A small, distinct point.
- Barthes writes, ‘However lightning-like it may be, the punctum has, more or less potentially, a power of expansion.’
- In view of the history of recurring meningitis, search of the child's skin then showed a small punctum in the back of the neck.
- For Barthes, the catastrophe is unavoidable because time obliterates the punctum, or small space, registered in the photograph.
1.1 Anatomy The opening of a tear duct.
- Goins explained that each eyelid has one punctum, a tiny opening that drains tears away from the eye.
- This incision is made on the medial aspect of the puncta and anterior to the lacrimal duct probes.
- This serves to elevate the lower lid and reposition the lacrimal punctum with significant improvement in tear drainage and distribution.
Late 16th century (figuratively, denoting a point): from Latin, literally 'a point'.
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