• (n.) A spore borne at the extremity of the cells of fructification in fungi.
<botany> A spore borne at the extremity of the cells of fructification in fungi. ... (11 Mar 1998) ... 
Ac'ro·spore noun [ Greek ... + ... fruit.] (Botany) A spore borne at the extremity of the cells of fructification in fungi. 
acrospore, acrosporous 1. The spore at the apex of a sporophore. 2. A spore produced at the apex of a hypha or cellular filament forming the structural element of fungi; a basidiospore.
a spore borne at the tip of a sporophore, as a basidiospore.