phonopore
/ˈfəʊnəpɔː/Telephony. Now historical
noun
An apparatus incorporating two insulated wires wound together so as to combine features of a capacitor and an induction coil, by means of which a telephone or telegraph circuit could be superimposed on an active circuit without interfering with the current carrying the original transmission.
Origin
Late 19th century; earliest use found in The Manufacturer and Builder. From phono- + ancient Greek πόρος passage; compare quot. 1891.
- serviceably
- service area
- serviceberry
- service book
- service break
- service bureau
- service cap
- service ceiling
- service charge
- service club
- service contract
- service dress
- service economy
- service flag
- service flat
- service game
- service industry
- service line
- serviceman
- astrolabic
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- astrolatry
- astrolithology
- astrologer
- astrologia