Bulk meaning : Size, specifically, volume. Any huge body or structure. The major part of something. Dietary fibre. Unpackaged goods when transported in large volumes, e.g. coal, ore or grain. A cargo or any items moved or communicated in the manner of cargo. Excess body mass, especially muscle. A period where one tries to gain muscle. (brane cosmology) A hypothetical higher-dimensional space within which our own four-dimensional universe may exist. The body. To appear or seem to be, as to bulk or extent. To grow in size; to swell or expand. To gain body mass by means of diet, exercise, etc. To put or hold in bulk. To add bulk to, to bulk out. Being large in size, mass or volume (of goods, etc.) Total