Initialism of Yukon Territory, A territory of Canada. / (Internet) Abbreviation of YouTube, a popular video hosting website.

(slang, African-American Vernacular, sometimes derogatory) Alternative spelling of white (“Caucasian”) / (uncommon, slang, African-American Vernacular, derogatory) Alternative spelling of whitey

(obsolete) Abbreviation of that.

(UK) Initialism of Youth Training Scheme.

A metallic chemical element (symbol Yb) with an atomic number of 70. / A single atom of this element.

A silvery metallic chemical element (symbol Y) with an atomic number of 39, mainly found in combination with lanthanide elements in rare-earth minerals.

Initialism of year-to-date.

Initialism of year to date.

(inorganic chemistry) Ytterbium oxide.

(chemistry) yttrium oxide