English
Silastic
Blend of silicone + plastic.
Ancient Greek πλάσσω ‘to mold’
Ancient Greek πλαστικός ‘fit for moulding’
Latin plasticus ‘of molding’
English plastic
Today it means
name A type of flexible, inert silicone rubber, used especially in prosthetic medicine to make devices such as shunts to control hydrocephalus, artificial heart valves and breast implants.
Language periods are conventional ranges, not dates for this word.
Etymograph / Silastic