e/Digit ratio

Information
has gloss	eng: The digit ratio is the ratio of the lengths of different digits or fingers typically measured from the bottom crease where the finger joins the hand to the tip of the finger. It has been suggested by some scientists that the ratio of two digits in particular, the 2nd (index finger) and 4th (ring finger), is affected by exposure to androgens e.g. testosterone while in the uterus and that this 2D:4D ratio can be considered a crude measure for prenatal androgen exposure, with lower 2D:4D ratios pointing to higher androgen exposure.
lexicalization	eng: digit ratio
instance of	(noun) any of the terminal members of the hand (sometimes excepting the thumb); "her fingers were long and thin" finger

Meaning
French
has gloss	fra: Lindice de Manning est donné par la mesure du rapport de la longueur entre lindex et l'annulaire.
lexicalization	fra: Indice de Manning