acroblast ac·ro·blast (āk’rə-blāst’)
A component of the developing spermatid, composed of numerous Golgi elements and containing the proacrosomal granules.
acrobrachycephaly acrobrachycephaly ac·ro·brach·y·ceph·a·ly (āk’rə-brāk’ĭ-sěf’ə-lē) n. A type of craniosynostosis in which there is premature closure of the coronal suture, resulting in an abnormally short anteroposterior diameter of the skull.
having the reproductive organ at the end of the primary axis. adjective (of mosses) having clustered upright stems and the reproductive parts borne at the tip of a stem Compare pleurocarpous
of or relating to any chromosome or chromatid whose centromere is closer to one end than to the other, creating two unequal chromosome arms. Compare (def 2), (def 2), . adjective (of a chromosome) having the centromere at one end noun an acrocentric chromosome acrocentric ac·ro·cen·tric (āk’rō-sěn’trĭk) adj. Having the centromere located near one end […]
- Acrocentric chromosome
acrocentric chromosome acrocentric chromosome n. A chromosome with the centromere located very close to one end so that the shorter arm is very small.
. acrocephaly ac·ro·ceph·a·ly (āk’rə-sěf’ə-lē) or ac·ro·ce·pha·li·a (āk’rō-sə-fā’lē-ə) n. See oxycephaly. ac’ro·ce·phal’ic (-sə-fāl’ĭk) adj.