prefix (before a vowel commonly reduced to ent-), repr. Gr. ἐντός within, inside, in many compounds of mod. formation relating to anatomy and biology, as Entoblast [Gr. βλαστός sprout], the nucleolus of a cell. Entocalcaneal a. (see quot. and CALCANEAL). Entocondyloid a. [Gr. κόνδυλ-ος knuckle + -OID] (see quot.). Entocuneiform a. (see quot. and CUNEIFORM). Entocyst (see quot. and CYST). Entoderm [Gr. δέρμα skin], the outer layer of the blastoderm, also called hypoblast. Entogastric a. [see GASTRIC], pertaining to the interior of the stomach or of the gastric cavity. Entoglossal a. [Gr. γλῶσσ-α the tongue + -AL], a term applied to one of the bones of the hyoidean arch in some fishes, which supports the tongue. Entometatarse [mod.L. metatarsus], the bones between the tarsus and the toes: see quot. for Entocalcaneal. Entoparasite (see quot. 1861); hence Entoparasitic a. Entoperipheral a. (see quot. and PERIPHERAL). Entophyte [Gr. φυτόν plant], a plant growing within the substance of other plants or animals; hence Entophytic a. Entoproctous a. [Gr. πρωκτός anus, rump], belonging to the Entoprocta, a class of Polyzoa, in which the anus lies within the circle of tentacles. Entopterygoid a. [see PTERYGOID] (see quot.). Entoptic a. [see OPTIC], relating to the appearance of the different internal structures of the eye; hence Entoptics sb. (see quot.). Entosternal a. [see STERNAL], pertaining to the entosternum or median piece of the sterum or breastbone, very largely developed in birds. Entotic a. [see OTIC], pertaining to or occurring in the inner ear. Entotympanic a. [see TYMPANIC], situated within the tympanum or drum of the ear.
1864. Webster, *Entoblast, the nucleolus of a cell.
1854. Owen, in Circ. Sc. (c. 1865), II. 74/1. One [process], called the *‘entocalcaneal,’ projects from below the entocondyloid cavity, and from the back part of the upper end of the *entometatarse. Ibid. The inner of the two cavities for the condyles … is the *‘entocondyloid’ cavity. Ibid. (1855), Skel. & Teeth, 254. The brachial artery pierces the entocondyloid ridge. Ibid. (1854), in Circ. Sc. (c. 1865), II. 81/2. The *entocuneiform bone.
1872. Mivart, Elem. Anat., 186. Of the three cuneiform bones, the innermost, the ento-cuneiform is the largest.
1884. Syd. Soc. Lex., *Entocyst, the inner layer of the cuticular envelope of the Polyzoa.
1879. trans. Haeckel’s Evol. Man, I. iii. 67. The lower, which forms the organs of digestion and reproduction, Huxley called the *Entoderm, or Inner-layer.
1877. Huxley, Anat. Inv. Anim., iii. 150. The details of this process of *entogastric gemmation have been traced by Haeckel in Carmarina hastata.
1878. Bell, trans. Gegenbaur’s Comp. Anat., 472. The rudimentary first arch fuses to form the so-called *entoglossal bone.
1861. Hulme, trans. Moquin-Tandon, II. VII. 324. Some writers have proposed to call them [Entozoa] *Entoparasites.
1876. Davis, Polaris Exp., App. 653. All the animals should be examined for ecto- and ento-parasites.
1861. H. Macmillan, Footnotes fr. Page Nature, 167. Animals of feeble vitality … are rarely, if ever, free from these *ento-parasitic plants.
1855. H. Spencer, Princ. Psychol. (1870), I. 250. Those [feelings] internally initiated, which we may conveniently call *entoperipheral.
1861. H. Macmillan, Footnotes fr. Page Nature, 167. Upwards of ten species of *entophytes have already been discovered parasitic upon man.
1847–9. Todd, Cycl. Anat., IV. 118/1. This substance [White Thrush] is in part *entophytic.
1861. H. Macmillan, Footnotes fr. Page Nature, 227. Entophytic fungi spring from beneath the cuticle of living plants.
1877. Huxley, Anat. Inv. Anim., xii. 680. The lowest known term … of the Malacozoic series is an *entoproctous Polyzoon.
1854. Owen, in Circ. Sc. (c. 1865), II. 79/1. The *entopterygoids.
1880. Günther, Fishes, 55. The entopterygoid, an oblong and thin bone attached to the inner border of the palatine and pterygoid.
1876. Bernstein, Five Senses, 80. All such phenomena are called *entoptic, because they deal with the perceptions of the internal portions of the eye.
1876. Catal. Sci. App. S. Kens., 551. Apparatus to determine the position of entoptic objects—in the humours of the eye.
1864. Reader, 2 July, 11/3. The light that enters the eye may, under certain conditions, cause one to see objects that exist within the eye-ball; and an investigation of these conditions is called *Entoptics.
1835–6. Todd, Cycl. Anat., I. 284/1. A middle one [i.e., centre] which supports the keel, termed … the *entosternal.
1854. Owen, in Circ. Sc. (c. 1865), II. 69/2. The median piece of the plastron, called ‘entosternal,’ answers to the sternum of the crocodile.
1878. M. Foster, Physiol., III. iii. 457. Corresponding to entoptic phenomena there are various *entotic phenomena.
1881. Mivart, Cat, 65. An internal, much wider part, the *ento-tympanic.
