Where does “ykkösristeily” come from?

ykkösristeily (Finnish) comes from Finnish risteily, from Finnish risteillä, from Finnish ristetä, from Finnish Risti, from Finnish -iäinen, from Finnish -inen, from Finnish -uus, from Proto-Finnic -uc — -ness, -hood.

ykkösristeily (Finnish): A cruise organized for the first year students of one or more high schools (lukio). This type of cruises are often organized by the students of the Finnish high schools located conveniently to the cruise harbors

Definitions

  1. A cruise organized for the first year students of one or more high schools (lukio). This type of cruises are often organized by the students of the Finnish high schools located conveniently to the cruise harbors

Ancestry of “ykkösristeily”, step by step

ykkösristeily traces back through two separate lines of ancestry.

via Finnish risteily

StepLanguageWordMeaning
1Finnishristeilycruise
2Finnishristeilläto crisscross; to cruise; Adessive plural form...
3Finnishristetäto intersect, cross
4FinnishRisticross
5Finnish-iäinenFront vowel variant of -iainen
6Finnish-inen-like, -ous, -y; -en; Creates adjectives from...
7Finnish-uusForms nouns from adjectives, expressing a quality
8Proto-Finnic-uc-ness, -hood

via Finnish ykkönen

StepLanguageWordMeaning
1Finnishykkönenone; unit, the number one; first
2Finnishyksione
3Proto-Finnicükcione
4Proto-Uralicükteone
Every word from Proto-Finnic -ucEvery word from Finnish -inenEvery word from Finnish -uus