online

adjective on·line \ ˈȯn-ˈlīn , ˈän-ˈlīn \
Updated on: 21 May 2018

Definition of online

: connected to, served by, or available through a system and especially a computer or telecommunications system (such as the Internet)
  • an online database
; also : done while connected to such a system
  • online shopping
  • online games
  • online searching

online

adverb

Examples of online in a Sentence

  1. The city libraries are all online.

  2. He likes to engage in online chats.

Recent Examples of online from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'online.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of online

1950

in the meaning defined above

See Words from the same year
NEW! Time Traveler

Other Computer-Related Terms


ONLINE Defined for English Language Learners

online

Definition of online for English Language Learners

  • : connected to a computer, a computer network, or the Internet

  • : done over the Internet


ONLINE Defined for Kids

online

adjective or adverb on·line \ ˈȯn-ˌlīn , ˈän- \

Definition of online for Students

: connected to, directly controlled by, or available through a computer system
  • an online database
  • working online


Seen and Heard

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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

a quick and clever reply

Get Word of the Day daily email!

Test Your Vocabulary

May 2018 Words of the Day Quiz

  • spring-flowers
  • Which is a synonym of raillery?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Word Winder's CrossWinder

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

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!