Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary
1

sib

play
adjective \ˈsib\

Definition of sib

  1. :  related by blood :  akin



Origin of sib

Middle English, from Old English sibb, from sibb kinship; akin to Old High German sippa kinship, family, Latin sodalis comrade, Greek ēthos custom, character, Latin suus one's own — more at suicide


First Known Use: before 12th century

Rhymes with sib


2

sib

noun

Definition of sib

  1. 1a :  kindred, relativesb :  a blood relation :  kinsman

  2. 2 :  a brother or sister considered irrespective of sex; broadly :  any plant or animal of a group sharing a degree of genetic relationship corresponding to that of human sibs

  3. 3 :  a group of persons unilaterally descended from a real or supposed ancestor



Before 12th Century

First Known Use of sib

before 12th century


Medical Dictionary

sib

play
noun \ˈsib\

Medical Definition of sib

  1. :  a brother or sister considered irrespective of sex; broadly :  any plant or animal of a group sharing a degree of genetic relationship corresponding to that of human sibs




Learn More about sib

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


Seen and Heard

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

WORD OF THE DAY

February 6, 2016

an official order, decree, or edict

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?

kittly-benders duvet spindrift pince-nez
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