Cryptophagia
Apophenia
Magical thinking
First language
Paraphilia
Battered woman syndrome
Learned helplessness

Psychologists/Researchers:
Ursula Bellugi
Edward Klima

-Humans-

teratoma
polyphagia
germ cell tumor
bilirubin encephalopathy
fetus in fetu
parasitic twin
triploid syndrome
sleep spindle
vanishing twin
split-brain
hemispherectomy

-Creatures-

-Plants-

-Fungi-

cinnabar
littoral zone
blackwater river
magnetite
physics in the medieval Islamic world
list of Arabic star names
absolute dating
subaerial
rhyolite