| Subject | English | Catalan |
| math. | pivotal quantity | quantitat pivotal |
| math. | quantity relative | quantitat relativa |
| comp., MS | quantity selling option | opció de quantitat de venda (An option in the product catalog that determines whether a product is sold whole, in fractions, or in whole and fractions, or if a user has no control over the quantity) |
| environ. | water quantity management The administration or handling of the amount of available potable water | gestió de quantitat d'aigua |