dys·cal·cu·li·a 
(dĭs′kăl-kylē-ə)
(dĭs′kăl-kylē-ə)n.
Impairment of the ability to understand and solve mathematical problems.
[DYS– + CALCUL(ATE) + –IA1.]
- quasi
- quasi-
- quasicrystal
- quasicrystalline
- Quasimodo
- quasiparticle
- quasi-stellar object
- quassia
- quatercentenary
- quaternary
- quaternary ammonium compound
- quaternary structure
- quaternion
- quatrain
- quatrefoil
- quattrocento
- quattuordecillion
- quattuordecillionth
- quaver
- quaveringly
- quavery
- quay
- quayage
- Quayle
- quayside