Spelfabet

aegis

Aeolian

aeon (US eon)

Aesop

aetiology (US etiology)

Aetolia

algae

anaemic (US anemic)

archaeology (US archeology)

archaeopteryx

bougainvillaea (but usually bougainvillea)

Caesar

caesium

chimaera (US chimera)

Daedalus

encyclopaedia (US encyclopedia)

faeces (US feces)

florae

Graeco (US Greco)

gynaecologist (US gynecologist)

haematology (US hematology)

haemotoma (US hemotoma)

haemophilia (US hemophilia)

hyaena (but usually hyena)

hyperglycaemia (US hyperglycemia)

ischaemia

leukaemia (US leukemia)

logopaedics

mediaeval (US medieval)

minutiae

Mycenae

orthopaedic (US orthopedic)

paean

paediatric (US pediatric)

paediatrician (US pediatrician)

palaeolithic (US paleolithic)

palaeontology (US paleontology)

praesidium (US presidium)

primaeval (US primeval)

reliquae

septicaemia (US septicemia)

Thalassaemia

Thermopylae

toxaemia (US toxemia)