Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
íon
←
Ancient Greek
ἰόν
(derived)
←
Ancient Greek
εἶμι
(mention)
←
Proto-Indo-European
*h₁ey-
(derived)
→
Portuguese
ião
(alter)