a cooking surface consisting of a flat sheet of heat-transmitting glass and ceramic material over heating elements, usually electric.
Origin of cooktop
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
US a flat unit for cooking in saucepans or the top part of a stove
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012