Where does “speakerphone” come from?

Speakerphone comes from English speaker and phone, where phone derives from Ancient Greek φωνή, ultimately from Proto-Indo-European bʰeh₂-.

speakerphone (English): A telephone with a microphone and loudspeaker...

Definitions

  1. A telephone with a microphone and loudspeaker...

Ancestry of “speakerphone”, step by step

speakerphone traces back through two separate lines of ancestry.

via English phone

StepLanguageWordMeaning
1EnglishphoneA device for transmitting conversations and other...
2EnglishtelephoneA telecommunication device used for two-way...
3Frenchtéléphonetelephone; first-person singular present...
4Frenchtélé-tele-
5Ancient Greekτῆλεfar off, afar, far away
6Latincommūnicāre
7Latincommūniscommon, commonplace, ordinary, general, universal, shared, shared alike, of both sides, belonging to two or more together
8Old Latincom(m)oinis
9Proto-Italickommoiniscommon
10Proto-Indo-Europeanḱom-moy-ni-held in common
11Proto-Indo-Europeanḱómbeside, near, by, with
12Proto-Indo-EuropeanḱeDeictic particle, here; Post-positional...
13Middle Englishkyt
14Germankittputty certain kinds of cement used for fixing e.g. window panes
15Old High Germankuti
16Proto-West Germanickwidugum, resin
17Proto-Germanickweduzresin
18Proto-Indo-Europeangʷet-resin, gum; to say, speak
19Proto-Indo-Europeangū-to bend; curve; arch; vault; to bow, bend, arch,...

via English speaker

StepLanguageWordMeaning
1EnglishspeakerOne who speaks; Loudspeaker; Speakerphone
2English-ineOf or pertaining to; Used to form demonyms;...
3French-inefeminine singular of -in; female equivalent of...
4Frenchpast participle root verb suffix of regular -er...
5Middle Frenchpast participle root verb suffix of regular; -ed, -en, -n
6Old Frenchused to form past participles of regular -er...
7Latin-asuffixed to the roots of verbs, forms agent...
8Proto-ItalicForms masculine agent nouns from prefixed or compounded bases
9Proto-Indo-European-éh₂
Every word from Proto-Indo-European gū-Every word from Proto-Indo-European gʷet-Every word from Proto-Germanic kweduz