<unk>  is a congenital malformation in which the phallus (penis or clitoris) is absent. The word is derived from the Greek a- for "not", and phallos for "penis". It is classified as an intersex condition.
Aphallia
Diphallia
Hypodontia
Anodontia
Macrodontia 
Paragraphia
Hamartia 
Asymmetric crying facies