transcription, транскрипция: [ ˈbe-səl- ]
noun
Etymology: Friedrich W. Bessel died 1846 Prussian astronomer
Date: 1872
: one of a class of transcendental functions expressible as infinite series and occurring in the solution of the differential equation x ² ( d ² y/dx ²) + x (dy/dx) = (n ² - x ²) y