decastyle

Decastyle, dek′a-stīl, n. a portico with ten columns in front.

The temple was decastyle, dipteral, with pronaos and vestibule, but no opisthodomos.

In other words Agrippa’s portico was decastyle; the actual portico is octastyle.

The temple was a decastyle peripteral structure of the Ionic order, standing on seven steps and possessing double rows of outer columns 60 ft. high, twenty-one in each row on the flanks.

The hypaethral is decastyle in both front and rear porticoes.