| Subject | English | Portuguese |
| el. | anti-jam | antiempastelamento |
| commun. | anti-jamming | anti-interferência |
| IT | card jam | congestionamento de cartões |
| el. | electronic jamming | interferência eletrónica |
| food.ind. | ginger jam | gengibre compotas |
| agric. | grape jam | arrobe |
| life.sc. | ice jam | bloqueio de gelo |
| life.sc., transp. | ice jam | barreira de gelo |
| life.sc., transp. | ice jam | garganta de gelo |
| industr., construct., met. | jam jar | pote para compota |
| industr., construct., met. | jam jar | boião para compota |
| agric. | jam-making | confeção de doces, sobremesas |
| el. | jam-nut mounting | método de montagem por porca |
| commun., el. | JAM panel | painel JAM |
| commun. | jamming equipment | equipamento de empastelamento |
| commun. | jamming immunity | imunidade à perturbação |
| el. | jamming immunity | imunidade à interferência |
| transp., agric. | log jam | obstrução causada por troncos |
| commun. | radar jamming | radar de perturbação |
| comp., MS, Braz. | Slow Jam | Slow Jam (One of the music genres that appears under Genre classification in Windows Media Player library. Based on ID3 standard tagging format for MP3 audio files. Winamp genre ID 111) |
| transp. | traffic jam | engarrafamento |
| environ. | traffic jam | engarrafamentos |
| environ. | traffic jam A number of vehicles so obstructed that they can scarcely move | engarrafamentos |
