invaginate /in-vajˈi-nāt/

1. To ensheath
2. To dent inwards, push or withdraw within, introvert

1. To be introverted
2. To form a hollow cavity by infolding

invagināˈtion noun

• ruckseats
• ruckus
• ruckuses
• rucola
• rucolas
• ructation
• ructations
• ruction
• ructions
• rud
• rudaceous
• rudas
• rudases
• rudbeckia
• rudbeckias
• rudd
• rudded
• rudder
• rudderfish
• rudderfishes
• rudderless
• rudders
• ruddied
• ruddier
• ruddies