MICROMILLIMETER 



764 



MICROSCLERE 



magnification of the microscope. The elliptic nucle- 

 ated red blood -corpuscle of the Necturus makes a good 

 object. If its long axis is 18 mm., and the magnifica- 

 tion of the microscope is 400 diameters, the actual 

 length of the axis would be 18 mm. -=- 400 = .045 

 mm. 3. By the use of a stage micrometer and camera 

 lucida. Indicate by means of the camera lucida the 

 outlines of the object to be measured. Replace the 

 object with a stage micrometer. Note how many 

 spaces are required to include the object. As the 

 value of each space is known, the size of the object 

 may be very readily computed. 



Micromillimeter (mi-kro-mil' -im-c-ter) [funpdg, small ; 

 mille, thousand; /uerpov, measure]. 1. The one- 

 thousandth part of a millimeter or the one-millionth part 

 of a meter. It is the unit of certain microscopic measure- 

 ments. It is called also micron. 2. The millionth 

 part of a millimeter. 



Micrommatous (mi-krom' -at-us) [funpog, small ; bfi/xa, 

 eye]. Small-eyed. 



Micromyelia (mi-kro-mi-e' '-le-ah) \_11iKp6g, small ; pveMg, 

 marrow]. Abnormal smallness of the myel, or 

 spinal cord. 



Micron (mi'-kron) \_funp6g, small : //. , Microns or 

 Micra\. The millionth part of a meter or a thou- 

 sandth of a millimeter, the generally accepted English 

 form of Listing's mikron. It is the equivalent of 

 Tsifftf OI " an English inch, and its symbol is ft. 



Micronucleus (mi-kro-nu' -kle-us) \_uiKp6g, small ; nu- 

 cleus, a kernel]. A small or minute nucleus. In biology, 

 Maupas' term for the paranucleus, or the nucleolus 

 *of other authorities. 



Microorchid (mi-kro-or' '-kid) [utupdg, small ; bp%ig, tes- 

 ticle]. Having very small testicles. 



Microorganic (mi-kro-or-gan' -ik) \_pLKp6g, small ; bpya- 

 vov, instrument]. Having the character of a micro- 

 organism. 



Microorganism (mi-kro-or' '-gan-izm) [fiiupdg, small ; 

 bpyavov, instrument]. A term applied to a microscopic 

 being of the animal or vegetable kingdom ; in a special 

 sense it is restricted to that vegetable group known as 

 bacteria. See Bacteria, Synonymatic Table of. 



Micropanencephalus (mi-kropan-en-sef-al-us) \_fii- 

 Kpog, small; rrav, all; eyK£0<Z/loc, encephalon]. 

 Lissauer's term for a skull in which the angle included 

 between lines drawn from the hormion to the nasion and 

 to the basion, respectively, is between 138 and 163 . 



Microparasite (mi-kro-par' -as-it) \jiiKp6g, small ; nap- 

 datrog, a parasite]. A parasitic bacterium or other 

 microorganism. 



Micropathologic (mi-kro-path-o-lof '-ik) [uiKpdg, small ; 

 Tcddog, disease; 2.6yog, science]. Pertaining to micro- 

 pathology. 



Micropathologist (mi-kro-path-ol' -o-jist) [funpbg, small; 

 ■ndBog, disease ; X6yog, science]. One versed in micro- 

 pathology. 



Micropathology (mi-kro-path-ol' '-o-je) [fwcpdg, small ; 

 rrdtiog, disease ; %6yog, science] . The study of minute 

 pathologic changes; also, the scientific study of micro- 

 organisms in their relation to disease. Morbid his- 

 tology. 



Microphage (mi'-kro-faj) \jiiKpbg, small ; fayeiv, to de- 

 vour]. A small phagocyte. Metschnikoff 's term for 

 certain small free leukocytes at the margin of an ery- 

 sipelatous patch of skin, and which he believes to have 

 the power of destroying the infecting micrococci of 

 the disease. (Power and Sedgivick .) 



Microphagist (mi-krof -aj-ist) [fiiicpdr, small; fayelv, 

 to eat]. In biology, a feeder on microscopic organ- 

 isms. 



Microphagocyte (mi - kro •fag' - o - sit) . 

 phage. 



See Micro- 



Microphagus (mi-krof -ag-us) [punpog, small ; <j>ayeiv, to 

 eat]. A microphage. 



Microphone (mi' -kro- f on) [fiwpog, small ; (jxjvt/, sound] . 

 An instrument that amplifies delicate or feeble sounds. 



Microphonia (mi-kro-fo' -ne-ah) \jw<ip6g, small ; quvi/, 

 voice]. A weak voice; feebleness of the voice. 



Microphotograph (mi-kro-fo' -to-graf) \_fwcp6g, small ; 

 06>c, light; ypdcpeiv, to write]. A very small or micro- 

 scopic photograph of an object ; in most cases the 

 object is greatly reduced in the photograph, and must 

 be looked at with a microscope. Cf. Photo-micrograph. 



NLicxo-pho\ogTa.iphy (mi- kro-fo-tog'-ra-fe)\_piKp6q, small ; 

 0wc, light; ypatymv, to write]. The production of 

 photographs of microscopic size, usually of large 

 objects. These photographs must then be examined 

 with a magnifier or microscope. In French and German 

 this term is also employed for Photo-micrography, q. v. 



Microphthalmos (mi-kroff-thal' -mos) \jiiKp6g, small ; 

 oipOa'A^dg, eye]. An abnormally small but otherwise 

 healthy eye. 



Microphylline (mi-kro-fil'-in) \_ptap6g, small ; cj>vA?.ov, 

 leaf]. In biology, possessing minute leaflets or scales. 



Microphyllous (mi-kroff'-il-us) \_niKp6g, small ; ®v/Jov, 

 leaf]. In biology, having small leaves. 



Microphyte (mi'-kro-fit) \juKpog, small ; <bvr6v, plant]. 

 Any microscopic plant, especially one that is parasitic in 

 habits. 



Microphytic (mi- kro -Jit'- ik) \_uinp6g, small; tyvrov, 

 plant]. Pertaining to microscopic vegetable life. 



Micropia (mi-kro' -pe-ah). See Micropsia. 



Microplasia (mi-kro-pla'-se-ah) \_[it.np6g, small; nMoig, 

 a molding]. Arrested development. 



Micropodous (mi-krop'-o-dus) [/nucpog, small ; rrovg, 

 foot]. Small-footed. 



Micropolariscope (mi-kro-po-lar' -is-kop) \jiiK.p6g, small ; 

 polaris, polar; anonelv, to view]. A polariscope 

 used in connection with a microscope. 



Micropore, Microporus (mi'-kro-por, mi-kro-por'-us) 

 [jiLnpog, small ; Tv6pog, a pore or passage]. In biology, 

 any small pore, as in the heads of certain spermatozoa ; 

 specifically applied by Moseley to the smaller pores in 

 the tegmenta of the shells of nearly all Chitonidce. Cf. 

 Megalopore. 



Microprosopa (mi - kro - pro - so' -pah) \_^.iKp6g, small ; 

 irpdcuTTOv, face]. Congenital smallness of the face. 



Micropsia (mi-krop'-se-ah) [fit np6g, small ; btpig, sight]. 

 An apparent diminution in the size of objects, sup- 

 posed to result from changes in the retinal end-organs. 



Micropsychia (mi-kro-si'-ke-ah) [tiinpdg, small ; 

 mind]. Weak-mindedness. 



Micropsychosis (mi-kro-si-ko'-sis) [ntupdg, small ; 



mind] . The inchoate thinking of infantile life ; the 

 spontaneous, disconnected, and half-suppressed think- 

 ing of later life ; wandering, dreamy, or uncontrolled 

 mental action. 



Micropus (mi-kro' -pus) [\.uK.p6g, small ; -ore, foot]. 

 Abnormal smallness of a leg ; a congenital defect. 



Micropyle (mi'-kro-pll) [funpdg, small; -/>//. gate, ori 

 fice]. In biology, the small opening in an ovum or ovule 

 through which the fertilizing particle may penetrate. 



Microrhabd (mi' -kro-rabd) \_/ump6g, small ; 



rod, stick, wand]. In biology, a rhabdus shaped 

 microsclere or flesh-spicule of a sponge. 



Mrcrorrheometer (vii-kro-re-om'-ct-er) [untpfc, small; 

 pelv, to flow; pirpov, measure]. An instrument 

 for measuring liquids flowing through small tubes. 



Microrrhinia (mi-kro-riti' -e-ah) [umpog, small . 

 nose]. Congenital atrophy or smallness of the 111 



Microscelous (mi-kros'-el-us) [pinp6g, small ; 

 leg]. Short-legged. 



Microsclere (tni'-kroskllr) [uiKpug, small ; ff« 

 hard]. In biology, a flesh-spicule of a sponge. 



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