(organic chemistry) Any salt or ester of pentadecanoic acid

pentadactyly

(anatomy) Having the form of, or a structure modified from, a pentadactyl limb.

An oligopeptide composed on fifteen amino acid residues

plural of pentadecapeptide

(organic chemistry) Any glyceride of pentadecanoic acid

(organic chemistry) The aliphatic aldehyde that has 15 carbon atoms

(organic chemistry) Any of several isomeric aliphatic ketones having fifteen carbon atoms

(chemistry) a hydrate containing fifteen molecules of water per molecule or unit cell

(chemistry, in combination) Fifteen atoms of copper in a compound.