Countable Nouns Starting with SEMI and Containing O

Explore 70 verified English countable nouns starting with SEMI and containing O, including Semiconductor, Semiautomatic, Semicolon, Semiprofessional, Semitone, Semiformal and Semibold. 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
Starts with SEMIA3 words
semiautomatic
semiabstraction
semiaccomplishment
Starts with SEMIB
1 words
semibold
Starts with SEMIC12 words
semiconductor
semicolon
semichorus
semiconsonant
semicolony
semicivilization
semicarbazone
semicoma
semicircumferentor
semicontradiction
semicircumvolution
semiconventionality
Starts with SEMID6 words
semidocumentary
semidome
semidouble
semideponent
semidomestication
semidilapidation
Starts with SEMIE
1 words
semiexhibitionist
Starts with SEMIF
2 words
semiformal
semifreddo
Starts with SEMIG4 words
semigloss
semigroup
semiglobe
semigenuflection
Starts with SEMIH
2 words
semihobo
semihepatization
Starts with SEMIL
2 words
semillon
semilog
Starts with SEMIM4 words
semimonthly
semiminor
semimicroanalysis
semimetamorphosis
Starts with SEMIN5 words
seminoma
seminomad
semination
seminationalization
seminonconformist
Starts with SEMIO6 words
semiotician
semioticist
semiosis
semioval
semiochemical
semiologist
Starts with SEMIP9 words
semiprofessional
semipro
semipostal
semiproductivity
semipalmation
semiporcelain
semipropagandist
semipreservation
semiprotectorate
Starts with SEMIQ
1 words
semiquinone
Starts with SEMIR4 words
semirevolution
semirevolutionist
semirotunda
semiroll
Starts with SEMIS
1 words
semisolid
Starts with SEMIT4 words
semitone
semitropics
semitropic
semithoroughfare
Starts with SEMIV
2 words
semivowel
semivitrification
Starts with SEMIW
1 words
semiworks

•Browse Countable Nouns by Letter (A to Z)

Select a starting letter to browse countable nouns
ABCDEFGHIJKLMNOPQRSTUVWXYZ
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.
Word Games & Solvers
Word FinderScrabble Word FinderWords With Friends CheatWordle SolverAnagram Solver
Dictionary & Reference
DictionarySynonymsAntonymsWordsVocabulary HubPositive WordsNegative Words
Community
Contact UsEditorial PolicyPrivacy PolicyTerms and Conditions
© 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.