| Subject | English | Arabic |
| radio | class A of an amplifying stage | صنف A لمرحلة التضخيم |
| comp., MS | Class A IP address | عنوان IP من فئة A (A unicast IP address that ranges from 1.0.0.1 through 127.255.255.254. The first octet indicates the network, and the last three octets indicate the host on the network. Class-based IP addressing has been superceded by Classless Interdomain Routing (CIDR)) |
| vac.tub. | class A operation | تشغيل الصمام في الحاله A |
| econ. | class A stock | سهم من الدرجة الأولى |
| econ. | class A stock | سهم ممتاز |
| econ. | class of a ship | فئة المركب بسجلات اللويدز |