hashtag

hash·tag

H5080550 (hăsh′tăg′)n. Computers A searchable keyword or sequence of characters prefixed with the pound sign (#), included in a tweet or other electronic communication and indicating the subject matter.

[hash + tag.]

hashtag

(ˈhæʃˌtæɡ) n (Communications & Information) (on the Twitter website) a word or phrase preceded by a hash mark, used to denote the topic of a post

hashtag

1. noun A word or phrase (written without spaces) preceded by the pound sign or hash mark (#) in a post on social media, meant as a way to add additional information, humor, or a searchable tag to the post. "Hashtag" is sometimes said humorously in conversation as well. She used the "unedited" hashtag, but that picture looks too good to not have a filter. A: "What a great day we've had!" B: "I know! Hashtag blessed."2. verb To mark a post with such a hashtag. She hashtagged that picture "unedited," but it looks way too good to not have a filter.

hashtag

A topic identifier in a tweet or other social network message that is indexed by the service so that all the user postings with that hashtag can be searched and read. The hashtag is the name of the topic with a number sign (#) prefix, also called a hash mark.

Hashtags are created for anything and everything, including people, businesses, organizations, sports teams, political parties, hobbies, events and philosophies, as well as rants and raves. For example, athletes might be interested in #triathlon or #ironman. See hash, tag, Twitter and bashtagging.

The Word Has Become Everyday Vocabulary

In this example at the Philadelphia airport, "hashtag worthy" means the trip is worth talking about.