Word Meanings - SEGMENTATION - Book Publishers vocabulary database

The act or process of dividing into segments; specifically , a self-division into segments as a result of growth; cell cleavage; cell multiplication; endogenous cell formation. Segmentation cavity , the cavity formed by the arrangement of the cells

Additional info about word: SEGMENTATION

The act or process of dividing into segments; specifically , a self-division into segments as a result of growth; cell cleavage; cell multiplication; endogenous cell formation. Segmentation cavity , the cavity formed by the arrangement of the cells in segmentation or cleavage of the ovum; the cavity of the blastosphere. In the gastrula stage, the segmentation cavity in which the mesoblast is formed lies between the entoblast and ectoblast. See Illust. of Invagination. -- Segmentation nucleus , the body formed by fusion of the male and female pronucleus in an impregnated ovum. See the Note under Pronucleus. -- Segmentation of the ovum, or Egg cleavage , the process by which the embryos of all the higher plants and animals are derived from the germ cell. In the simplest case, that of small ova destitute of food yolk, the ovum or egg divides into two similar halves or segments , each of these again divides into two, and so on, thus giving rise to a mass of cells , all equal and similar, from the growth and development of which the future animal is to be formed. This constitutes regular segmentation. Quite frequently, however, the equality and regularity of cleavage is interfered with by the presence of food yolk, from which results unequal segmentation. See Holoblastic, Meroblastic, Alecithal, Centrolecithal, Ectolecithal, and Ovum. -- Segmentation sphere , the blastosphere, or morula. See Morula.

Related words: (words related to SEGMENTATION)

• FORMALITY
  The dress prescribed for any body of men, academical, municipal, or sacerdotal. The doctors attending her in their formalities as far as Shotover. Fuller. 6. That which is formal; the formal part. It unties the inward knot of marriage, . . . while
• DIVIDER
  An instrument for dividing lines, describing circles, etc., compasses. See Compasses. Note: The word dividers is usually applied to the instrument as made for the use of draughtsmen, etc.; compasses to the coarser instrument used by carpenters.
• DIVIDEND
  A number or quantity which is to be divided. (more info) 1. A sum of money to be divided and distributed; the share of a sum divided that falls to each individual; a distribute sum, share, or percentage; -- applied to the profits as appropriated
• FORMICARY
  The nest or dwelling of a swarm of ants; an ant-hill.
• FORMULIZE
  To reduce to a formula; to formulate. Emerson.
• PROCESSIVE
  Proceeding; advancing. Because it is language, -- ergo, processive. Coleridge.
• FORMERLY
  In time past, either in time immediately preceding or at any indefinite distance; of old; heretofore.
• PROCESSIONALIST
  One who goes or marches in a procession.
• SPECIFICALLY
  In a specific manner.
• DIVISIONARY
  Divisional.
• FORMICAROID
  Like or pertaining to the family Formicaridæ or ant thrushes.
• DIVISIONALLY
  So as to be divisional.
• FORMIDABLY
  In a formidable manner.
• RESULTIVE
  Resultant. Fuller.
• FORMICATE
  Resembling, or pertaining to, an ant or ants.
• FORME
  See PATTé
• FORMEDON
  A writ of right for a tenant in tail in case of a discontinuance of the estate tail. This writ has been abolished.
• FORMAT
  The shape and size of a book; hence, its external form. The older manuscripts had been written in a much larger format than that found convenient for university work. G. H. Putnam. One might, indeed, protest that the format is a little
• FORMYL
  A univalent radical, H.C:O, regarded as the essential residue of formic acid and aldehyde. Formerly, the radical methyl, CH3.
• FORMALIZE
  1. To give form, or a certain form, to; to model. 2. To render formal.
• FALCIFORM
  Having the shape of a scithe or sickle; resembling a reaping hook; as, the falciform ligatment of the liver.
• OMNIFORMITY
  The condition or quality of having every form. Dr. H. More.
• INFORMITY
  Want of regular form; shapelessness.
• DEFORMER
  One who deforms.
• DIVERSIFORM
  Of a different form; of varied forms.
• PREFORM
  To form beforehand, or for special ends. "Their natures and preformed faculties. " Shak.
• VARIFORM
  Having different shapes or forms.
• RESINIFORM
  Having the form of resin.
• BIFORM
  Having two forms, bodies, or shapes. Croxall.
• VILLIFORM
  Having the form or appearance of villi; like close-set fibers, either hard or soft; as, the teeth of perch are villiform.
• REFORMALIZE
  To affect reformation; to pretend to correctness.
• FULL-FORMED
  Full in form or shape; rounded out with flesh. The full-formed maids of Afric. Thomson.
• SCORIFORM
  In the form of scoria.
• SUBINDIVIDUAL
  A division of that which is individual. An individual can not branch itself into subindividuals. Milton.
• REFORMATIVE
  Forming again; having the quality of renewing form; reformatory. Good.
• MALCONFORMATION
  Imperfect, disproportionate, or abnormal formation; ill form; disproportion of parts.
• PENNIFORM
  Having the form of a feather or plume.
• DENDRIFORM
  Resembling in structure a tree or shrub.
• WELL-INFORMED
  Correctly informed; provided with information; well furnished with authentic knowledge; intelligent.