Prepollent
Pre*pol"lent\, a. [L. praepollens, p. p. of praepollere to surpass in power; prae before + pollere to be powerful.] Having superior influence or power; prevailing; predominant. [R.] --Boyle.Prepollent
Pre*pol"lent\, n.; pl. Prepollices. [NL. See Pre-, Pollex.] (Anat.) An extra first digit, or rudiment of a digit, on the preaxial side of the pollex.