| Subject | Portuguese | English |
| commun. | envelope coletor | collective envelope |
| commun., industr., construct. | envelope com janela transparente | window envelope |
| commun., industr., construct. | envelope com janela transparente | envelope with a transparent panel |
| commun., industr., construct. | envelope de carta | envelope of a letter |
| commun., IT | envelope de entrega | delivery envelope |
| comp., MS | envelope de mensagem | message envelope (" The information contained in an e-mail message that is required to send and deliver a message between messaging servers by using SMTP protocol commands. The message envelope contains the sender e-mail address and the recipient e-mail address information. Recipients never see the message envelope, because it is not part of the message content, and it is discarded when the message reaches its destination. The X.400 messaging standard equivalent to the message envelope is called the "P1 header." The message envelope is often referred to as the "P1 header.") |
| hobby, commun. | envelope de primeiro dia | first day cover |
| commun., IT | envelope de submissão | submission envelope |
| IT | envelope de trama | frame envelope |
| comp., MS | envelope de transferência de mensagem | message transfer envelope (A MAPI message that holds the delivery information for a message) |
| commun., IT | envelope de transmissão | relaying envelope |
| commun. | envelope de transmissão de documentos que acompanham as encomendas postais | envelope for transmission of documents accompanying postal parcels |
| transp., avia. | envelope de utilização | operational envelope |
| transp., avia. | envelope de utilização | flight envelope |
| comp., MS | envelope digital | digital envelope (Private messages encrypted using the recipient's public key. Enveloped messages can only be decrypted by using the recipient's private key, allowing only the recipient to understand the message) |
| transp., avia. | envelope do centro de gravidade certificado | certificated centre of gravity envelope |
| mech.eng. | envelope duplo | dual envelope |
| el. | envelope frio de plasma | cold plasma mantle |
| commun., IT | envelope informático | computer-generated mailing piece |
| commun., IT | envelope informático | data mailer |
| commun., IT | envelope informático | computer-generated letter |
| transp., avia. | envelope operacional do CG | operational CG envelope |
| IMF. | envelope orçamental | budget envelope |
| IMF. | envelope orçamentário | budget envelope |
| tech., industr., construct. | envelope-postal | correspondence pocket |
| tech., industr., construct. | envelope-postal | correspondence envelope |
| commun. | envelope selado | stamped envelope |
| med., life.sc. | envelope viral | envelope |
| med., life.sc. | envelope viral | viral envelope |
| econ. | sistema do envelope duplo | double envelope system |
| health., anim.husb. | vírus com envelope lipídico | lipid-enveloped virus |