(Canada, US) The punctuation mark "¡", which is placed at the beginning of exclamations in Spanish.

plural of inverted exclamation point

The punctuation mark "¿", which is placed at the beginning of questions in Spanish and, less commonly, Catalan.

plural of inverted question mark

An animal without vertebrae, i.e. backbone. / (informal) A spineless person; a coward.

Lacking a backbone; without vertebrae. / Cowardly, uncourageous; lacking character.

(biochemistry, organic chemistry) An enzyme that catalyzes the hydrolysis of sucrose into glucose and fructose (invert sugar), used by bees to produce honey and in the food industry to soften chocolate.

plural of invertebrate

plural of invertor

That which inverts. / (anatomy) Any muscle that turns a body part inwards. / (electricity) A device that converts direct current into alternating current.