Englishfor English speakers
holographic
—
adjective
written entirely in one's own hand
holographic document
—
adjective
of or relating to holography or holograms
—
adjective
written wholly in the handwriting of the signer
a holographic will
sonar
—
noun
(= asdic)
a measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return
sonar is an acronym for sound navigation ranging
asdic is an acronym for antisubmarine detection investigation committee