envelope
US /ˈɑːn.və.loʊp/
UK /ˈɑːn.və.loʊp/
1.
envelope
a flat, usually square or rectangular, paper container with a gummed flap, used for enclosing a letter or document
:
•
She sealed the letter in an envelope.
Ela selou a carta em um envelope.
•
Please put the documents in a large envelope.
Por favor, coloque os documentos em um envelope grande.
2.
envelope, camada
a layer or surrounding part that encloses or covers something
:
•
The planet is surrounded by a thick gaseous envelope.
O planeta é cercado por um espesso envelope gasoso.
•
The virus has a protective protein envelope.
O vírus possui um envelope proteico protetor.