1. (adv.) In the middle; at half the distance; imperfectly; partially; as, he halfway yielded.
2. (a.) Equally distant from the extremes; situated at an intermediate point; midway.
Thesaurus Entries
amidships, average, betwixt and between, center, centermost, central, core, equatorial, equidistant, half, half-and-half, in medias res, in the mean, in the middle, interior, intermediary, intermediate, mean, medial, medially, median, mediocre, mediterranean, medium, mediumly, mesial, mezzo, mezzo-mezzo, mid, middle, middlemost, middling, midland, midmost, midships, midway, nuclear, one-and-a-half, part, partial, partly
