Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
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noun
The point of closest approach of an astronomical object in an elliptical orbit to its center of attraction.
Definition source: English Wiktionary via Wiktextract
Topics: astronomy, natural-sciences
No example sentence was provided for this meaning.
Synonyms: perifocus
Antonyms: apocenter
History
Etymology tree Proto-Indo-European *per-der. Ancient Greek περῐ́ (perĭ́)der. English peri- Proto-Indo-European *ḱent-der. Ancient Greek κέντρον (kéntron)der. Latin centrumder. Middle French centrebor. Middle English center English center English pericenter From peri- + center.
