| Language | Lexeme | Native script | Phonetic | Phonemic | Notes | |
|---|---|---|---|---|---|---|
| 17 | Armenian: Western | layn | լայն | lɑjn | lɑin | |
| 161 | Gaelic: Irish | leathan | ˈl̪ʲæhənˠ | ˈl̪ʲahˠənˠ | ||
| 76 | Lithuanian | platùs | plɐˈtʊs | plaˈtʊs | ||
| 16 | Armenian: Eastern | layn | լայն | lɑjn | lɑin | |
| 23 | Sinhalese | paḷal | පළල් | |||
| 21 | Vedic: Early | pr̥thú- | पृथु- | pɾtʰu- | prtʰú- | 'wide, extensive, flat and broad, large, flat and extended, flat and roomy' |
| 74 | Latvian | plats | plɑts | plɑts | ||
| 159 | Gaelic: Scottish | leathann | l̪ʲɛhən̪ˠ | |||
| 158 | Old Irish | lethan | ˈl̪ʲeθˠʊnˠ | ˈl̪ʲeθən | ||
| 15 | Armenian: Classical | layn | լայն | lɑjn | lɑin-i- | |
| 148 | Gaulish | litanos | ||||
| 155 | Middle Breton | ledan | ˈleːdan | |||
| 46 | Avestan: Younger | pərəϑu | 𐬞𐬆𐬭𐬆𐬚𐬎 | pərθu | appears to be more widely used than paθana- | |
| 7 | Greek: New Testament | platýs | πλατύς | plaˈtys | plaˈtys | |
| 11 | Greek: Cypriot | platýs | πλατύς | plɐˈtis | plɐˈtis | |
| 14 | Tsakonian: Propontis | p(l/ou)atý | π(λ/ου)ατύ | p(ʟ/w)aˈti | plaˈti | |
| 9 | Greek: Cappadocian | platý | πλατύ | plaˈti | plaˈti | also /plaˈtʃi/ |
| 10 | Greek: Pontic | platýs | πλατύς | plaˈtis | plaˈtis | |
| 12 | Greek: Italiot | platéo | πλατέο | plaˈte̞o̞ | plaˈte̞o̞ | Ap. |
| 13 | Tsakonian: Peloponnese | prakioú | πρακιού | praˈcu | praˈkiu | |
| 75 | Latgalian | plots | plɔts | plɔts | ||
| 160 | Gaelic: Manx | lhean | lʲeːn | lʲeːn | leathan | |
| 157 | Breton: Treger | ledan | ˈle̝ːdän | ˈle̝dän | ||
| 156 | Breton: Gwened | ledan | lədɑ̃ːn | |||
| 151 | Welsh: North | llydan | ˈɬədan | ˈɬədan | ||
| 150 | Middle Welsh | llydan | ɬədan | |||
| 149 | Old Welsh | litan | ɬɨdan | LL: 258 | ||
| 55 | Parthian | frāx | frʾx | frɑːx | fraːx | cf. pahn |
| 62 | Tati | ferā | fera | |||
| 64 | Balochi: Sistani | prāh | prɑh | |||
| 56 | Kurdish N.: Bahdini | fɨre | fɨræ | |||
| 66 | Middle Persian | frāx | plʾhwˈ | frɑːx | fraːx | ZMP, cf. pahn, wēhm |
| 153 | Late Cornish | ledan | ˈledən |
S.v. Gk. πλατύς 'wide, broad, flat, level', from PIE *pl̥th₂-ú- 'broad' and identical to Skt. pr̥thú-, Av. pərəθu- 'wide, broad' (root *pleth₂-).
S.v. Lith. platùs 'broad, wide' (Latv. plašs 'broad, wide', var. plats), from PIE *plth₂-u- (Skt. pr̥thú- 'wide, broad', Av. pərəθu- 'wide, broad', Gk. πλατύς 'wide, broad, flat, level'). Baltic apparently has an o-grade in this adjective.
S.v. OLith. platùs 'breit, weit, ausführlich' (BSl. Latv. plašs 'weit, breit, gräumig, ausgedehnt, etc.), from PIE *pleth₂- 'breit werden, sich ausbreiten' (cf. Ved. pr̥thú- 'breit, weit', OAv. pərəθu-, YAv. pərəθu- 'id.', Gk. πλατύς 'weit, breit, flach, eben', OHG flado 'Fladen, flacher, Kuchen, Honigscheibe').
S.v. Arm. լայն lain 'breit', an inherited word (cf. Skt. pr̥thú- 'breit, weit', práthate 'breitet sich aus', práthas- 'Breite, Ausdehnung', Av. fraθah- 'Breite', Gk. πλατύς 'breit', πλάτος 'Breite', Lith. platùs 'breit', OIr. lethan, W. litan 'breit').
S.v. *flitano-, *flitawī 'broad', from PIE *plth₂u- 'broad', *plth₂u̯ih₂ 'the broad one' (cf. pr̥thivī́- 'earth', Gk. Πλάταια (toponym)). Proto-Celtic *flitawī directly represents the feminine form, while *flitano- is from derived *plth₂-no- (cf. Hitt. paltana- 'shoulder').
S.v. Ved. pr̥thú- 'breit, weit, ausgedehnt groß, zahlreich, umfänglich' (cf. IIr. OAv. pərəθu- 'breit, weit'), from PIE *plth₂-ú- (cf. Gk. πλατύς 'weit, breit, flach, eben', Lith. platùs 'weit, breit, ausgedehnt', etc.). p.179 "práthas- n. Weite, Breite, Ausdehnung [...] Iir., jav. fraϑah- n. "Breite" - Idg. *pléth₂-es-"
Arm. layn 'wide' < *pl̥th₂ni- (cf. Gk. πλάτανος, OIr. lethan).
Cf. s.v. *pleth₂- 'breit werden, sich ausbreiten' (IEW 833).
S.v. *pleth₂- 'breit werden, sich ausbreiten' (LIV 486f., IEW 833).
