evolutionary
Word family
Synonym discussion
Sense: adjective/1
While all four words can describe change in living things, they focus on different aspects. 'Evolutionary' is the broadest term, covering the entire process of species change across generations through natural selection and other mechanisms. 'Genetic' is narrower and refers specifically to information carried in DNA; a change can be genetic without being evolutionary (e.g. a mutation that does not spread through a population). 'Adaptive' highlights the functional side — changes that help an organism survive in its environment. 'Developmental' describes changes that happen within a single organism's lifetime, such as a tadpole becoming a frog, rather than across generations. For example, saying 'the evolutionary history of whales' refers to their gradual change from land mammals over millions of years, while 'the developmental stages of a whale' would describe how an individual whale grows from calf to adult.
Common collocations
Etymology
The word 'evolutionary' comes from 'evolution' (from Latin 'evolutio', meaning 'an unrolling or opening') combined with the suffix '-ary', which turns a noun into an adjective meaning 'relating to'. The biological sense of 'evolution' — referring to species changing over time — became widely used after Charles Darwin's 'On the Origin of Species' (1859), though the word itself had been used in English since the 1600s for the general idea of gradual unfolding or development.