/ ˈɪnsjuleɪt; NAmE -səl-/ verb [ vn ]
1.
insulate sth (from / against sth) to protect sth with a material that prevents heat, sound, electricity, etc. from passing through :
Home owners are being encouraged to insulate their homes to save energy.
2.
insulate sb/sth from / against sth to protect sb/sth from unpleasant experiences or influences
SYN shield
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WORD ORIGIN
mid 16th cent. (originally meaning to make land in to an island): from Latin insula island + -ate .