transformation
Pluraltransformations
- 1A striking change in appearance or character, especially a change for the better.
The neighborhood's transformation over the decade brought new shops and green parks.
Years of disciplined training produced a remarkable transformation in the athlete's physique.
Similarmetamorphosis, makeover, turnaround, revolution, overhaul
- 2A change into a different form, or the state of having undergone such a change.
The transformation of the factory floor into office space took most of the year.
Photosynthesis depends on the transformation of light into chemical energy.
Similarconversion, change, alteration, transmutation
Note
The general noun has a long pedigree: Middle English transformacioun, from Middle French, from Ecclesiastical Latin trānsfōrmātiō, though English speakers also hear it as plain transform plus -ation. It counts either way. A single event takes the article (undergo a radical transformation), while an ongoing process stays uncountable, as when Richard Evans, writing in RAIL in 2025, calls the railway a force of economic and social transformation.
- 3In mathematics, a function that maps one space onto another or onto itself, often by replacing variables or repositioning the coordinate axes.
The transformation rotated every point ninety degrees around the origin.
Applying the transformation mapped the unit square onto a slanted parallelogram.
Similarmapping
Note
Mathematics gathers three procedures under one name: substituting new variables for old in an expression, mapping a space onto another space or onto itself, and shifting or turning the axes of a coordinate system. They are one idea seen from different sides, a rule that sends every point somewhere definite. The word is countable here: a rotation is one transformation, and a change of axes is another.
- 4In biology, the alteration of a bacterial cell caused by the uptake of DNA from another cell, especially when that DNA is pathogenic.
Bacterial transformation allowed the harmless strain to acquire genes from the virulent one.
Researchers triggered transformation by exposing the cells to free-floating DNA fragments.
Note
Microbiology borrows the word for a change brought about by foreign DNA: a bacterial cell takes up genetic material from another cell and is altered by it. The case that matters most is the pathogenic one, when a harmless strain becomes dangerous. A cell that has gone through it is said to be transformed, and writers often add bacterial to keep the term apart from the everyday sense.
- 5In linguistics, a rule that systematically converts one syntactic form into another, or a sentence derived by applying one.
The passive transformation reorders the subject and object of a clause.
Early generative grammar relied on transformation to relate deep and surface structures.
Note
Linguistics uses the word on both sides of an operation: the rule itself, and the sentence that comes out of applying it. Context tells them apart. The passive transformation names a rule, while a transformation of a given sentence is its derived version. Unlike the everyday sense, nothing changes over time here. The rule states a systematic relation between one syntactic form and another.
- 6In South African politics, the transition from the apartheid era to a multiracial democracy.
South Africa's transformation dismantled the legal framework of apartheid within a few years.
The transformation brought formerly disenfranchised citizens into the political process.
Similartransition
Note
A South African political term that makes a general noun the name of one national project. It covers the dismantling of statutory segregation, the 1994 enfranchisement of the Black majority, and the later work of social and economic redress. It can stand without an article (the politics of transformation) or with one (the transformation). Outside South Africa, listeners will usually hear the "marked change" sense instead.
Practice
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Origin
Inherited from Middle English transformacioun, from Middle French, from Ecclesiastical Latin trānsfōrmātiō. It is formed from 'transform' plus the suffix '-ation'.