The 'colorless' form of a dye created as a result of its insoluble form interacting with an alkaline liquor. Color returns to the dye upon oxidation.

(phonetics) A word with the same meaning as another formed by removing one or more of the syllables of the longer word, and considered a word in its own right rather than an abbreviation.

Any activity or piece of work that has artistic merit

(chiefly UK) Behavior that is both morally and socially correct; proper manner, decorum or etiquette.

(education) In England, the final two years of secondary school, during which students are about sixteen to eighteen years of age.

(grammar) A type of word part; a bound morpheme; used in combination with a word, a different combining form, or an affix to form a new word.

The morphology of an organism that distinguishes it from others. / Alternative form of lifeform

(medicine) An incomplete form or partial symptom of a disease.

A form one fills in when applying for a job, placement, course, service etc.

(taxonomy) A collection of organisms that is given formal recognition at some rank with a taxonomic name, but which is known to be a grouping based on similar morphological characteristics, rather than more extensive biological similarity.