perron /perˈən or pe-rɔ̃ˈ/

1. A raised platform or terrace at an entrance door
2. An external flight of steps leading up to it

• geometries
• geometrisation
• geometrisations
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• geometrization
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• geomorphic
• geomorphogenic
• geomorphogenies
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• geomorphogeny
• geomorphologic
• geomorphological
• geomorphologically