noun · 2 senses · updated from the 2026-07-25 local source snapshot
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.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
US:/ˌɛkoʊloʊˈkeɪʃən/
Southern-England:Recorded audio is listed in the source snapshot.
rhymes with -eɪʃən
CMU ARPABET:EH2 K OW0 L OW0 K EY1 SH AH0 N
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
The use of echoes to detect objects as observed in bats and other natural creatures.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: biosonar
Antonyms: none provided
2
noun
Meaning 2
determining the location of something by measuring the time it takes for an echo to return from it
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.