1. (n.) The act of tracing anything from a source\; the act of procuring an effect from a cause, means, or condition, as profits from capital, conclusions or opinions from evidence.

2. (n.) A leading or drawing off of water from a stream or source.

3. (n.) The act of tracing origin or descent, as in grammar or genealogy; as, the derivation of a word from an Aryan root.

4. (n.) The state or method of being derived; the relation of origin when established or asserted.

5. (n.) That from which a thing is derived.

6. (n.) That which is derived; a derivative; a deduction.

7. (n.) The operation of deducing one function from another according to some fixed law, called the law of derivation, as the of differentiation or of integration.

8. (n.) A drawing of humors or fluids from one part of the body to another, to relieve or lessen a morbid process.

IC analysis acceptance accidence acquisition admission admittance adoption affiliation affix affixation allomorph ancestry apparentation appropriation assumption beginning birth blood bloodline borrowed plumes bound morpheme bowwow theory branch breed by-product cognate commencement common ancestry comparative linguistics conception conclusion conjugation consanguinity consequence consequent copying corollary cutting declension deduction derivative deriving descent descriptive linguistics development dialectology difference of form dingdong theory direct line distaff side distillate doublet effect enclitic eponym eponymy etymology etymon event eventuality eventuation extraction family female line filiation folk etymology formative foundation fountain free form fruit genealogy genesis getting glossematics glossology glottochronology glottology grammar graphemics grass roots harvest head historical linguistics house illation imitation immediate constituent analysis inception induction inference infix infixation inflection infringement issue language study legacy lexicology lexicostatistics line line of descent lineage linguistic geography linguistic science linguistics logical outcome male line mathematical linguistics mocking morph morpheme morphemic analysis morphemics morphology morphophonemics offshoot offspring origin original origination outcome outgrowth paleography paradigm pasticcio pastiche philology phonetics phonology phylum pirating plagiarism plagiary precipitate prefix prefixation primitive proclitic product provenance provenience psycholinguistics race radical radix receipt receival receiving reception result resultant rise root seed semantic history semantics sept sequel sequela sequence sequent side simulation sociolinguistics source spear side spindle side stem stirps stock strain structuralism succession suffix suffixation sword side syntactics taking taproot theme transformational linguistics upshot well wellspring whence word history word-formation