Half of octa-
The crossword clue "Half of octa-" is answered by TETRA, a 5-letter entry. Used 9 times across 8 distinct years; most recently in 2026; first recorded in 1993. It appears in 6 publications in the xd corpus. Every figure on this page comes from the collection data itself, never from a guess.
The answer
TETRA
5 letters. See every clue for this answer on the TETRA answer page.
Used 9 times across 8 distinct years; most recently in 2026; first recorded in 1993. It appears in 6 publications in the xd corpus. Frequency and last-seen figures come from the xd crossword corpus only.
Other clues for TETRA
Every other clue in this collection answered by TETRA, most used first.
- Aquarium fish - used 214 times, most recently in 2026
- Colorful aquarium fish - used 47 times, most recently in 2026
- Aquarium favorite - used 43 times, most recently in 2026
- Prefix meaning "four" - used 36 times, most recently in 2026
- Four: Prefix - used 35 times, most recently in 2025
- Tropical fish - used 33 times, most recently in 2024
- Numerical prefix. - used 28 times, most recently in 2025
- Colorful tropical fish - used 20 times, most recently in 2026
- "Neon" fish - used 18 times, most recently in 2026
- Colorful fish - used 17 times, most recently in 2026
- Four: Comb. form. - used 17 times, most recently in 2020
- Popular aquarium fish - used 16 times, most recently in 2025
- Aquarium denizen - used 14 times, most recently in 2012
- Neon ___ (aquarium fish) - used 14 times, most recently in 2026
- Brightly colored aquarium fish - used 12 times, most recently in 2021
- One more than tri- - used 12 times, most recently in 2026
- "Four" at the fore - used 11 times, most recently in 2016
- Neon ___ - used 11 times, most recently in 2014
- Common aquarium fish - used 10 times, most recently in 2025
- Prefix with fluoride - used 10 times, most recently in 2018
- Prefix with -hedron - used 10 times, most recently in 2019
- Aquarium swimmer - used 9 times, most recently in 2026
- Aquarium beauty - used 8 times, most recently in 2019
- Brightly colored tropical fish - used 7 times, most recently in 2025
- Colorful swimmer - used 7 times, most recently in 2024
- Penta- minus one - used 7 times, most recently in 2026
- Four: Pref. - used 6 times, most recently in 2009
- Tropical aquarium fish - used 6 times, most recently in 2025
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.
- Half of Hispaniola - HAITI, used 56 times
- Half note - MINIM, used 23 times
- Half-and-half half - CREAM, used 20 times
- Half of half-and-half - CREAM, used 19 times
- Half-diameters - RADII, used 17 times
- Half of A/V - AUDIO, used 17 times
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