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analysis [analysis 词源字典]: analysis: [16] The underlying etymological notion contained in analysis is of ‘undoing’ or ‘loosening’, so that the component parts are separated and revealed. The word comes ultimately from Greek análusis, a derivative of the compound verb analúein ‘undo’, which was formed from the prefix ana- ‘up, back’ and the verb lúein ‘loosen, free’ (related to English less, loose, lose, and loss).

It entered English via medieval Latin, and in the 17th century was anglicized to analyse: ‘The Analyse I gave of the contents of this Verse’, Daniel Rogers, Naaman the Syrian 1642. This did not last long, but it may have provided the impetus for the introduction of the verb analyse, which first appeared around 1600; its later development was supported by French analyser.
=> dialysis, less, loose, lose, loss[analysis etymology, analysis origin, 英语词源]
dialysis: dialysis: [16] As in the case of its close relative analysis, the underlying etymological notion contained in dialysis is of undoing or loosening, so that the component parts are separated. The word comes ultimately from Greek diálusis, a derivative of dialúein ‘tear apart’; this was a compound verb formed from the prefix dia- ‘apart’ and lúein ‘loosen, free’ (related to English less, loose, lose, and loss).

In Greek it meant simply ‘separation’, but it was borrowed into English, via Latin dialysis, as a rhetorical term denoting a set of propositions without a connecting conjunction. The chemical sense, ‘separation of molecules or particles’ (from which the modern application to ‘renal dialysis’ comes), was introduced in the 1860s by the chemist Thomas Graham (1805–69).
=> analysis, less, loose, lose, loss
loose: loose: [13] Loose is one of a large family of words that go back ultimately to Indo-European *lau-, *leu-, *lu-, which denoted ‘undoing’. It includes (via Greek) analyse and paralyse, (via Latin) dissolve and solution, and (via Germanic) lose and the suffix -less. Loose itself was borrowed from Old Norse laus, which was descended from a prehistoric Germanic *lausaz.
=> analyse, dissolve, lose, paralyse, solution
de-: active word-forming element in English and in many words inherited from French and Latin, from Latin de "down, down from, from, off; concerning" (see de), also used as a prefix in Latin usually meaning "down, off, away, from among, down from," but also "down to the bottom, totally" hence "completely" (intensive or completive), which is its sense in many English words. As a Latin prefix it also had the function of undoing or reversing a verb's action, and hence it came to be used as a pure privative -- "not, do the opposite of, undo" -- which is its primary function as a living prefix in English, as in defrost (1895), defuse (1943), etc. Compare also dis-.
defeasance (n.): early 15c., from Anglo-French defesaunce, Old French desfaisance "undoing, destruction," from desfaire (Modern French défaire) "to undo, destroy" (see defeat (v.)). Related: Defease; defeasible.
re-: word-forming element meaning "back to the original place; again, anew, once more," also with a sense of "undoing," c. 1200, from Old French and directly from Latin re- "again, back, anew, against," "Latin combining form conceivably from Indo-European *wret-, metathetical variant of *wert- "to turn" [Watkins]. Often merely intensive, and in many of the older borrowings from French and Latin the precise sense of re- is lost in secondary senses or weakened beyond recognition. OED writes that it is "impossible to attempt a complete record of all the forms resulting from its use," and adds that "The number of these is practically infinite ...." The Latin prefix became red- before vowels and h-, as in redact, redeem, redolent, redundant.
undo (v.): Old English undon "to unfasten and open" (a window or door), "to unfasten by releasing from a fixed position; to cancel, discharge, abrogate, reverse what has been done, put back in a former condition; bring to ruin, destroy," from un- (2) "opposite of" + do (v.). Related: Undone; undoing.