angle bracket

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Either of a pair of symbols, < >, used to enclose written or printed material.
• noun Mathematics Either of these symbols, used especially together to indicate quantities to be treated as a unit.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun computing Either of the two inequality signs of ASCII, < and >, when used as brackets in markup languages like HTML.
• noun typography, mathematics Either of a pair of symbols, ⟨ and ⟩, used to enclose text in various technical contexts, and in mathematical formulas to denote an interval or a continuous parameter.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun either of two punctuation marks (`<' or `>') used in computer programming and sometimes used to enclose textual material
• noun an L-shaped metal bracket