Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

pinna

play
noun pin·na \ˈpi-nə\

Definition of pinna

plural pin·nae play \ˈpi-ˌnē, -ˌnī\ or pinnas

  1. 1 a :  a projecting body part (as a feather, wing, or fin) b :  the largely cartilaginous projecting portion of the external ear — see ear illustration

  2. 2 :  a leaflet or primary division of a pinnate leaf or frond



Origin of pinna

New Latin, from Latin, feather, wing — more at pen


First Known Use: 1719


Medical Dictionary

pinna

play
noun pin·na \ˈpin-ə\

Medical Definition of pinna

plural pin·nae \ˈpin-ˌē, -ˌī\play play or pinnas

  1. :  the largely cartilaginous projecting portion of the external ear

  2. pin·nal \ˈpin-əl\play adjective



Illustration of pinna


Learn More about pinna

  1. Medical Dictionary: Definition of "pinna" Britannica.com: Encyclopedia article about "pinna"


Seen and Heard

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

WORD OF THE DAY

February 5, 2016

bread traditionally eaten on Shabbat

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image1037863653

Which of the following refers to thin, bending ice, or to the act of running over such ice?

pince-nez kittly-benders spindrift duvet
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ