1. (the sum of the number of neutrons and protons in an atomic nucleus)
mass number, nucleon number
synonim: liczba masowa

2. (the basic unit of electric current adopted under the Systeme International d'Unites
"a typical household circuit carries 15 to 50 amps")
ampere, amp, A: : synonim: amper

3. (a crystalline amino acid that occurs in many proteins)
alanine: : synonim: alanina
synonim: Ala