intra- /ɪntrə/ BrE AmE prefix formal or technical
[ Language: Late Latin ; Origin: Latin intra 'inside' , from an unrecorded Latin interus ; ⇨ ↑ interior 2 ]
1 . inside SYN within :
intra-departmental (=within a department)
2 . into:
an intravenous injection (=into a vein)