SINCE 1828

An Encyclopædia Britannica Company

Medical Dictionary

orbitofrontal

adjective or·bi·to·fron·tal \ ˌȯr-bit-ə-ˈfrənt-ᵊl \

medical Definition of orbitofrontal

:located in, supplying, or being the part of the cerebral cortex in the basal region of the frontal lobe near the orbit

the orbitofrontal branch of the middle cerebral artery

orbitofrontal blood flow

the orbitofrontal cortex

Seen and Heard

What made you want to look up orbitofrontal? Please tell us where you read or heard it (including the quote, if possible).

show

WORD OF THE DAY

malign

play

to speak evil of

Words at Play

alt-59e77dc36c593

The Origins of 'Lobbyist'

From the front hallways to the back rooms

alt-59e673567065d

The History of the Word 'Terrorism'

Noah Webster first entered the term in 1840

alt-59e65152518a6

'Regimen' vs. 'Regiment'

The rule of thumb for words about rules

alt-59e50f5a357b4

'Spox' May Go On The Record

From newsroom lingo to the mainstream

Ask the Editors

video-title-words-of-the-year-1066

Words of the Year: 1066

Or, Why Pig Meat is Called 'Pork' and Cow Meat is Called 'Beef'

How Often Is 'Biweekly'?

Don't get us started on 'bimonthly'

video-irregardless-grammar-peeve-blend-of-the-synonyms-irrespective-and-regardless

Irregardless

It is in fact a real word (but that doesn't mean you should use it).

video-moose-goose-weird-plurals

Weird Plurals

One goose, two geese. One moose, two... moose. What's up with that?

Word Games

knupfer-painting-solon-before-croesus

Forms of Government Quiz

Name that government! Or something like that.

Take the quiz

rembrandt-painting-a-young-scholar-and-his-tutor

Original Meanings Quiz

A quiz for the pedantic and those annoyed by them!

Take the quiz

Name That Thing

Name That Thing

Test your visual vocabulary with our 10-question challenge!

Take the quiz

SCRABBLE® Sprint

SCRABBLE® Sprint

SCRABBLE® fans, sharpen your skills!

Play the game