photorelease

The story

1. Proto-Indo-European*bʰeh₂-
2. Proto-Indo-European*bʰéh₂os
3. Proto-Hellenic*pʰáwos
4. Ancient Greekφᾰ́ος (phắos)
5. Ancient Greekφῶς (phôs)
6. Ancient Greekφωτο- (phōto-)
7. Englishphoto-
8. Proto-Italic*wre-
9. Latinre-
10. Old Frenchre-
11. Proto-Indo-European*(s)leg-
12. Proto-Indo-European*(s)leg-s-ós
13. Latinlaxus
14. Latinlaxō
15. Vulgar Latin*laxicāre
16. Vulgar Latin*lassicāre
17. Old Frenchlaschier
18. Old Frenchrelaschier
19. Old Frenchrelaisser
20. Middle Englishrelesen
21. Englishrelease
22. English todayphotorelease

From photo- + release.