microchip
Concise Oxford English Dictionary © 2008 Oxford University Press:
microchip/ˈmʌɪkrəʊtʃɪp/
▶noun a tiny wafer of semiconducting material used to make an integrated circuit. ▶verb (microchips, microchipping, microchipped) implant a microchip under the skin of (a domestic animal) as a means of identification.
'microchip' also found in these Oxford entries:

