Return to the home page.

Expand/collapse menu.

Visit Our Sites

Unabridged Dictionary

Learner's Dictionary

Word Central for Kids

Collegiate Dictionary

Expand/collapse menu.

Premium Services

Unabridged Dictionary

Collegiate Dictionary

Institutional Subscriptions

Expand/collapse menu.

Expand/collapse menu.

Word of the Day

Subscriber Help

Expand/collapse menu.

More Word Games

Daily Crossword

Expand/collapse menu.

Open Dictionary

Alphabetical Browse

Browse Categories

Submit an Entry

Expand/collapse menu.

Spelling Bee Hive

Hive Headquarters

Spelling Champion

Spelling Reform

Expand/collapse menu.

Word for the Wise

Today's Broadcast

Expand/collapse menu.

Books and CD-Roms

Online Services

Palm and Pocket PC

Expand/collapse menu.

Looking Up a Word

Citing the Dictionary

Audio Pronunciations

Word Games Help

Expand/collapse menu.

Merriam-Webster FAQ

Advertising Info

Copyright Notice

involuntary muscle

Browse the Dictionary:: A; B; C; D; E; F; G; H; I; J; K; L; M; N; O; P; Q; R; S; T; U; V; W; X; Y; Z

involuntary muscle

One entry found for involuntary muscle. Main Entry: involuntary muscle
Function: noun
: muscle governing reflex functions and not under direct voluntary control; especially : SMOOTH MUSCLE

Learn more about "involuntary muscle" and related topics at Britannica.com

Find more about "involuntary muscle" instantly with Live Search

See a map of "involuntary muscle" in the Visual Thesaurus

Pronunciation Symbols