External: pref.
The crossword clue "External: pref." is answered by ECTO, a 4-letter entry. Used 8 times across 3 distinct years; most recently in 2007; first recorded in 2000. It appears in 1 publications in the xd corpus. Every figure on this page comes from the collection data itself, never from a guess.
The answer
ECTO
4 letters. See every clue for this answer on the ECTO answer page.
Used 8 times across 3 distinct years; most recently in 2007; first recorded in 2000. It appears in 1 publications in the xd corpus. Frequency and last-seen figures come from the xd crossword corpus only.
Other clues for ECTO
Every other clue in this collection answered by ECTO, most used first.
- Prefix with plasm - used 80 times, most recently in 2026
- Outer: Prefix - used 63 times, most recently in 2026
- Outside: Prefix - used 39 times, most recently in 2023
- Outside (Pref.) - used 29 times, most recently in 2025
- Outside: Comb. form - used 27 times, most recently in 1998
- Opposite of endo- - used 18 times, most recently in 2024
- Prefix meaning "outer" - used 18 times, most recently in 2026
- Plasm prefix - used 14 times, most recently in 2026
- Prefix with morph - used 13 times, most recently in 2021
- Plasm starter - used 12 times, most recently in 2009
- Prefix for plasm - used 12 times, most recently in 2018
- Plasm preceder - used 10 times, most recently in 2009
- Outer: pref. - used 9 times, most recently in 2014
- External: Prefix. - used 8 times, most recently in 2020
- Outer: Comb. form - used 8 times, most recently in 2004
- ___-1 ("Ghostbusters" vehicle) - used 7 times, most recently in 2022
- Prefix with -derm - used 7 times, most recently in 2022
- ___-1 ("Ghostbusters" car) - used 6 times, most recently in 2023
- Prefix with parasite - used 6 times, most recently in 2024
- Start to morph? - used 6 times, most recently in 2023
- Word form for "outer" - used 6 times, most recently in 2006
Related clues
Clues in this collection of the same answer length that share a word with this clue, or match its answer pattern when no word is shared. Most used first.
- Within (Pref.) - ENTO, used 46 times
- Within (Pref.) - ENDO, used 40 times
- Bone: Pref. - OSTE, used 29 times
- Half (Pref.) - HEMI, used 27 times
- Transcending (Pref.) - META, used 25 times
- Both (Pref.) - AMBI, used 21 times
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