Unsupported titles/`lt`

<	U+003C, < LESS-THAN SIGN

Character variations

﹤	U+FE64, ﹤ SMALL LESS-THAN SIGN

＜	U+FF1C, ＜ FULLWIDTH LESS-THAN SIGN

See also: ‹, ⟨, and ˂

Translingual

<

(mathematics) Less than.
Synonym: ≱

Antonyms: (equivalent opposite) >, (inverse) ≥, ≮

$\forall x<3$ ― for all x less than three

$x<3$ ― x is less than three
(linguistics) Which is from.
Synonym: ←

Antonym: >
(informal) A left-pointing arrow.
Antonym: >
(Internet slang) Is worse (than); is inferior (to).
Antonym: >

cats < dogs ― cats are worse than dogs

dogs < cats ― dogs are worse than cats
(editorial mark) The counter-diple, a mark in the right margin used together with < in the right margin to note important passages in a text, such as biblical quotations. (See > <.) With the advent of moveable type, these marks were moved into the text, becoming the guillemets › ‹.
See < > for uses of these symbols enclosing other characters.