Etymology

nocturnal

N1O1C3T1U1R1N1A1L1

Today it means: Of a person, creature, group, or species, primarily active during the night. Full definition →

Middle French nocturnal ← Late Latin nocturnālis ← Latin nocturnus
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The story

  1. Proto-Indo-European · derived from*nókʷts“night”
  2. Latin · derived fromnox“night”
  3. Latin · derived fromnocturnus“nocturnal”
  4. Late Latin · derived fromnocturnālis“nocturnal”
  5. Middle French · borrowed fromnocturnal
  6. English todaynocturnal

From Middle French nocturnal, from Late Latin nocturnālis (“nocturnal”), from Latin nocturnus (“nocturnal”), from Latin nox (“night”), from Proto-Indo-European *nókʷts (“night”). Cognates include Ancient Greek νύξ (núx), Sanskrit नक्ति (nákti), Old English niht (English night) and Proto-Slavic *noťь.

Words from the same roots

Latinnocturnus all →

nocturnenotturnonocturn

Latinnox all →

noxnoctidialnoctule

Proto-Indo-European*nókʷts all →

nightequinoxnotturnonoctulesennight

Etymology from Wiktionary, CC BY-SA 4.0.