The story
- Latin · derived fromtactus
- English todaytacnode
Words from the same roots
Latintactus all →
tacttactus
Etymology from Wiktionary, CC BY-SA 4.0.
tacnode
Today it means: A point of a curve where two or more osculating circles to the curve at that point are tangent, so that two branches of the curve have ordinary tangency at the double point. Full definition →
Latin tactus