Definition:Apsis/Linguistic Note
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Apsis: Linguistic Note
The word apsis comes from the ancient Greek ἁψίς (hapsís), which means arch or vault.
The plural of apsis (and apse) is apsides, pronounced ap-si-dees.
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): apse (plural apsides)
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): apsis (plural apsides)