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

• proto-history
• protohuman
• protohumans
• Proto-Indo-European
• protolanguage
• protolanguages
• protolithic
• protomartyr
• protomartyrs
• protomorphic
• proton
• proton beam
• proton beams
• protonema
• protonemal
• protonemata
• protonematal
• protonic
• proton microscope
• protonotarial
• protonotariat
• protonotariats
• protonotaries
• protonotary
• proton pump inhibitor