Countable Nouns Starting with ISO and Containing R

Explore 39 verified English countable nouns starting with ISO and containing R, including Isomorphism, Isometric, Isomer, Isoform, Isopropyl, Isolator and Isobar. Browse these count nouns with singular and plural forms below, or review singular and plural count rules in our noun grammar guide.

Refine list...
JUMP:
Sort:

Group:

Case:

View:

JUMP TO:
Select any word to view available definitions & photosSelect any word for details
isobar
isobutyraldehyde
isobront
isochrone
isochore
isochron
isocracy
isochromosome
isocryme
isochlorophyllin
Starts with ISOD
2 words
isodimorphism
isodiaphere
Starts with ISOF
1 words
isoform
isogram
isograft
isogriv
isogeotherm
Starts with ISOL
1 words
isolator
isomorphism
isometric
isomer
isometry
isometrics
isomerization
isomerism
isomerase
isomorph
Starts with ISON
1 words
isonitrile
isopropyl
isoprene
isoprenoid
isopteran
isoperimeter
isothermal
isotropy
isotherm
isotron
isothere
isotheral

•Browse Countable Nouns by Letter (A to Z)

Select a starting letter to browse countable nouns
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.