ensphere or insphere /in-sfērˈ/

1. To enclose or place in or as if in a sphere
2. To give a spherical form to

• weakens
• weaker
• weaker sex
• weaker vessel
• weaker vessels
• weakest
• weak-eyed
• weakfish
• weakfishes
• weak force
• weak forces
• weak-handed
• weak-headed
• weak-hearted
• weak-hinged
• weak interaction
• weak interactions
• weakish
• weak-kneed
• weak-kneedly
• weaklier
• weakliest
• weakliness
• weaklinesses
• weakling