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Is it OK to say that "a human has 20 fingers" or you need to specify that "a human has 10 fingers and 10 toes"?
We can also sub-divide the digits on the hand. We have ten fingers; if we refer to them individually, we call the opposable digit on each hand the thumb.
I think "dactyl" means that too, but I have no idea if and how often it's used .
dactyl - definition of dactyl by the Free Online Dictionary, Thesaurus and Encyclopedia.
I've never heard or seen it in this meaning. Knowing the Greek root, I thought it could be a word in English too and looked it up.
I was trying to find out if it's used and couldn't find any usage related to humans. This is the only non-lexicographic occurence I have spotted.
(http://biol-chem.uwb.edu.pl/IP/POL/B...azkupr2010.pdf)Pereiopods 3 and 4 with visible distal elements
(Fig. 1A). Merus oval-shaped, hind margin with 2-3 setae; carpus slightly shorter than propodus, also with several
postero-marginal setae; propodus comparatively long, with
2 short setae on anterior margin and 6-7 pairs of setae on
the posterior margin; dactyls comparatively robust, with
strong apical nail, inner margins with 3-5 spinifirm setae
(Figs. 2B, C).
Doesn't seem very useful, does it...