Definition of satnav in US English:

satnav

noun

  • Navigation dependent on information received from satellites.

    • ‘And today's multibillion-dollar worldwide market for satnav products and services is almost totally dominated by the U.S., and the Europeans certainly would like a share of this market.’
    • ‘The aerospace company said it is willing to shoulder the up-front costs of development, noting that it already is in the satnav business and has become a major leader in satcom.’

Origin

1970s: blend of satellite and navigation.

Pronunciation

satnav

/ˈsætnæv//ˈsatnav/