遷移 (せんい) uses the on'yomi for both kanji: 遷 (セン) meaning to move/change, and 移 (イ) meaning to shift. Incorrect readings like せんぎ or せんえ misread 移, while ぜんい incorrectly voices 遷. It denotes a gradual or ecological transition, or a change from one state to another.

遷移（せんい）は両漢字とも音読み。遷（セン）は「移り変わる」、移（イ）は「動く」の意味。せんぎ・せんえは移、ぜんい・は遷の誤読。物事が移り変わることを表し、特に生態学で使われます。