| Subject | English | Spanish |
| nat.sc., chem. | Phosphate Buffered Saline-Tween | tampón fosfato salino-Tween |
| agric. | tween deck | entrepuente |
| environ. | tween-deck tanker 'between deck tanker'; A sea-going vessel that includes space between two continuous floor-like surfaces or platforms, which is also designed for bulk shipments of liquids or gases | petrolero de cubierta de tween |