'formation'はこちらの項目にも見つかりました。
英語の見出し語に対する説明:
association
- branching
- calyx
- cavitation
- chelation
- constitution
- cracking
- crystallization
- dendrite
- echelon
- elevation
- encystment
- fall in
- folded rock
- foliation
- fretwork
- gallstone
- gastrulation
- hoodoo
- icing
- individuation
- inflection
- ionic lattice
- ionization
- knot
- layering
- line
- morphological
- nucleation
- ossification
- outlier
- phalanx
- polymerization
- right
- scaling
- screen
- scrum
- stalactite
- stalagmite
- starburst
- ulceration
- umbel