Ecto-

//ɛktoʊ-// prefix

prefix ·Rare ·Advanced level

Definitions

Prefix
  1. 1
    Outside. morpheme
  2. 2
    Ghost-related. morpheme

    "ecto-blaster, ectometer"

Synonyms

All synonyms
exexoout

Example

More examples

"For quotations using this term, see Citations:ecto-."

Etymology

From Ancient Greek ἐκτός (ektós, “outside”). Sense 2 ("ghost-related") is a reinterpretation of this prefix in the word ectoplasm (“paranormal substance believed to be involved in the materialization of the dead”), for the etymology of which see there.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.