crystalize or crystaliseverb

• horripilation
• horror
• horror-stricken
• horror-struck
• horror vacui
• hors concours
• hors de combat
• hors d'oeuvre
• horse
• horse-and-buggy
• horseback
• horsebean
• horsebox
• horse brass
• horsebreaker
• horse chestnut
• horse-coper
• horseflesh
• horsefly
• Horse Guards
• horsehair
• horsehide
• horse latitudes
• horse laugh
• horseleech