Where does “lämpösumma” come from?

lämpösumma (Finnish) comes from Finnish summa, from Swedish summa, from Latin summa, from Latin summus, from Proto-Italic supemos, from Proto-Indo-European (s)úp-m̥mo-s, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

lämpösumma (Finnish): heat sum, thermal sum, accumulated temperature

Definitions

  1. heat sum, thermal sum, accumulated temperature

Ancestry of “lämpösumma”, step by step

lämpösumma traces back through two separate lines of ancestry.

via Finnish summa

StepLanguageWordMeaning
1Finnishsummasum; amount
2Swedishsummasum, result of addition
3Latinsummatop, summit, highest point or place; the...
4Latinsummushighest, greatest, the most high; top, on top
5Proto-Italicsupemos
6Proto-Indo-European(s)úp-m̥mo-s
7Proto-Indo-Europeanupóunder, below
8Proto-Indo-Europeanh₃ewp-

via Finnish lämpö

StepLanguageWordMeaning
1Finnishlämpöwarmth, heat; heat; fever
2Finnish-oForms result or action nouns from verbs; Forms...
3Proto-Finnic-oForms action/result nouns from verbs
4Proto-Uralic-w
Every word from Proto-Indo-European h₃ewp-Every word from Proto-Indo-European upóEvery word from Proto-Indo-European (s)úp-m̥mo-s