Multilingual Demographic Dictionary, second unified edition, English volume

Lethal characteristic (LETHAL characteristic)

Translation
Section	English 910	Arabic 910	Czech 910	German 910	Spanish 910	French 910	Italian 910	Japanese 910	Portuguese 910	Russian 910	Chinese 910
910-1	eugenics	علم تحسن النسل	eugenika	Eugenik	eugenesia	eugénisme	eugenetica	優生学	eugenia	Евгеника	优生学
910-2	heredity	وراثة	dědičnost	Vererbung	herencia	hérédité	ereditarietà	遺伝	hereditariedade	Наследственность	遗传
910-3	hereditary characteristic	خصائص الوراثية	dědičný znak	vererbbares Merkmal —erbliches Merkmal —Erbmerkmal	caracteres hereditarios	caractère héréditaire	caratteri ereditari	遺伝形質	características hereditárias	Наследственные признаки	遗传性状
910-4	acquired characteristic	خصائص المكتسبة	získaný znak	erworbenes Merkmal	caracteres adquiridos	caractère acquis	caratteri acquisiti	獲得形質	Características adquiridas	Приобретенные признаки	后天性状
910-5	lethal characteristic	خاصية المميتة	letální znak	Letalfaktor	carácter letal	caractère létal	carattere letale	致死形質	característica letal	Летальный признак	致死性状

In eugenics ¹, a theory which examined the role of heredity ², the transmission of hereditary characteristics ³, such as the color of the eyes, from generation to generation. Acquired characteristics ⁴ are not so transmitted. A lethal characteristic ⁵ generally brings about the early death of the foetus.