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polttopiste

From Wiktionary, the free dictionary

Finnish

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Etymology

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poltto (burn, burning) +‎ piste (point), from the fact that a convex lens concentrates the rays of the sun into the focus of the lens, which may cause a flammable material to catch fire.

Pronunciation

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  • IPA(key): /ˈpoltːoˌpisteˣ/, [ˈpo̞l̪t̪ːo̞ˌpis̠te̞(ʔ)]
  • Rhymes: -iste
  • Hyphenation(key): poltto‧piste

Noun

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polttopiste

  1. (optics) focus (point at which reflected or refracted rays of light converge)
    Synonym: fokus
  2. (mathematics) focus (point of a conic at which rays reflected from a curve or surface converge)

Declension

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Possessive forms of polttopiste (Kotus type 48/hame, no gradation)

Derived terms

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(compounds):

Further reading

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