Proto-IE: *(s)tona- / *(s)tena-
Meaning: to thunder, to moan
Old Indian: stanati, staniti, tanyati `to resound, roar, thunder', stanayitnú-, tanyatú- m. `thunder', tanayitnú-, tanyú- `roaring, thundering'
Old Greek: sténō, (-omai̯) `stöhnen,dröhnen, ächzen, jammern', trans. `beklagen, beweinen', stenázdō, stenákhō `id.', stóno-s m. `das Stöhnen usw.'; stonakhǟ́ f. `das Stöhnen, Seufzen'; *ténjō: ténnei = sténei, brǘkhetai Hsch.
Latin: tonō, -āre, -uī, -itum `donnern', tonō, -ere `id.'; tonitrū (gramm.), pl. tonitra/tonitrua n., tonitrus, -ūs m. `Donner'
Russ. meaning: греметь, стонать
Comments: Cf. *ton-.
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