The phrase "are of significant size" is correct and usable in written English.
It can be used when describing objects, entities, or phenomena that have a considerable physical dimension or magnitude.
Example: "The newly discovered fossils are of significant size, indicating that these creatures were much larger than previously thought."
Alternatives: "are quite large" or "are of considerable size".
But almost all of those outposts were uninhabited, and only a few were of significant size.
In the early 21st century fewer than 15 urban settlements qualified for city status, and only two were of significant size: the provincial capital, Regina, and its slightly larger sister city, Saskatoon.
"Pancreatic cancer cells are surrounded by a dense layer of fibroblasts," she said, adding that in nonfamilial pancreatic cancer, the Palladin protein "makes the fibroblasts grow little feet filled with poisonous enzymes that create holes through which the cancer cells can escape and invade blood vessels very early in the disease, before the tumor is of significant size".
The criteria in (2) is used to enforce the intuitive notion that we expect any sequence to have at least one nonbackground object that is of significant size.
We assume that I ( t ) is of significant size for t ≤ 1, but not for t ≫ 1. (For numerical illustrations, we will use I ( t ) = r t e − t, with r > 0.) Thus the "duration" of the input pulse I is on the order of 1 ms. We will discuss in what sense there is coincidence detection, i.e., in what sense more rapid delivery of excitatory input is more effective.
13/56 (23%) patients had findings of any size on CCE that were not verified on CSPY, 2 (4%) were of significant size.
GP nm is of significant size if the amplification protocol has a different effect on different genes and CG jn represents the gene-specific cell line effect.
The approximately 30% of reads mapped to the whole genome which did not match exon + intron regions represented pseudogenes, remains of repetitive elements (REs) (common in the high-AT regions) and, primarily, 5′/3′-UTRs that can be of significant sizes.
