MES- 



186 



MES- 



mesos, middle ; rhts, nose.] Be- 

 tween the nostrils (zool.). 



mesorhinium (mes'orm'fum) n. [Gk, 

 mesos, middle ; rhis, nose.] The 

 internarjal surface region of a 

 bird's bill (zool.). 



mesosalplnx (mes'osal'pmgks) n. [Gk. 

 mesos, middle ; salpingx, a trumpet.] 

 The portion of supporting ligament 

 stretching from uterine tube to the 

 lerel of the ovary (anat.). 



mesoscapula (mes'oskap'ula) n. [Gk. 

 mesos, middle ; L. scapula, shoulder- 

 blade.] The scapular spine 

 (anat.). 



mesoscutellum (mes'oskuteTum) n. 

 [Gk. mesos, middle ; L. scutellum, 

 a small shield.] The scutellum of 

 insect's mesothorax (zool.). 



mesoscutum (mes'osku'tum) n. [Gk. 

 mesos, middle ; L. scutum, a shield.] 

 The scutum of insect's mesothorax 

 (zool.}. 



mesosoma (mes'oso'ma) n. [Gk. mesos, 

 middle ; soma, body.] The middle 

 part of the body ; the praeabdomen 

 of Arthropods, or anterior broader 

 part of abdomen (zool.). 



mesosperm (mes'ospgrm) n. [Gk. 

 mesos, middle ; sperma, seed.] The 

 integument investing the nucellus 

 of an ovule (bot.). 



mesospore (mes'ospor) n. [Gk. mesos, 

 middle ; sporos, seed.] The inter- 

 mediate of three spore coats ; a 

 resting-spore stage (bot.). 



mesosporium (mes'ospo'rrum). Meso- 

 spore. 



mesostate (mes'ostat) n. [Gk. mesos, 

 middle ; stasis, a standing.] An 

 intermediate stage in metabolism 

 (phys.\ 



mesostereom (mes'6st6r'e8m) n. [Gk. 

 mesos, middle ; stereos, solid.] The 

 middle layer of thecal plates of 

 Cystidea (zool.). 



mesosternebra (mes'oste'r'ne'bra) n. 

 [Gk. mesos, middle ; sternon, breast- 

 bone.] A part of the developing 

 mesosternum (emb.). 



mesosternum (mes'osteYnum) n. [Gk. 

 mesos, middle ; L. sternum, breast- 

 bone.] The middle part of the 

 sternum of vertebrates ; the gladi- 

 olus (anat.) ; the sternum of the 

 mesothorax of Insects (zool.). 



mesostethium (mes'oste'thlum) n. 



[Gk. mesos, middle ; stethos, the 

 chest.] A mesosternum (zool.). 



mesostylous (mes'osti'lus) a. [Gk. 

 mesos, middle ; stylos, pillar.] Hav- 

 ing styles of intermediate length ; 

 appl. heterostylous flowers (bot.). 



mesotarsal (mes'otar'sal) a. [Gk. 

 mesos, middle ; L. tarsus, ankle- 

 joint.] Pert, a mesotarsus of an 

 Insect (zool.).^ 



mesotarsus (mes'otar'sus) n. [Gk. 

 mesos, middle ; L. tarsus, ankle- 

 joint.] A middle-limb tarsus of 

 insects (zool.). 



mesothecium (mes'othe'sium, -shium) 

 n. [Gk. mesos, middle ; theke, cup.] 

 The middle investing layer of an 

 anther-sac (bot.). 



mesothelium (mes'othe'lium) n. [Gk. 

 mesos, middle ; thele, nipple.] Meso- 

 derm bounding the primitive coelom 

 and giving rise to muscular and 

 connective tissue (anat.). 



mesotherm (mes'othgrm) n. [Gk. 

 mesos, middle ; therme, heat.J A 

 plant thriving in a moderate heat 

 (bot.). 



mesothoracic (mes'dthoras'ik) a. [Gk. 

 mesos, middle ; thorax, chest.] Pert. 

 or in the region of the meso- 

 thorax ; appl. a spiracle of Insects 

 (zool.). 



mesothorax (mes'otho'raks) n. [Gk. 

 mesos, middle ; thorax, chest.] The 

 middle segment of the thoracic 

 region of Insects (zool.). 



mesotriaene (mes'otri'en) n. [Gk. 

 mesos, middle ; triaina, a trident.] 

 An aberrant type of triaene spicule 

 (zool.). 



mesotrochal (mesot'rokal) a. [Gk. 

 mesos, middle ; trochos, wheel.] 

 Appl. an annulate larva with circlet 

 of cilia round the middle of the 

 body (zool.). 



mesotympanic (mes'otimpan'Ik) a. 

 [Gk. mesos, middle ; tympanon, a 

 drum.] The symplectic ; one of 

 the bones in the suspensory appa- 

 ratus of the lower jaw in Fishes 

 (zool.). 



mesovarlum (mes'ova'rium) n. [Gk. 

 mesos, middle ; L. ovarium, an 

 ovary.] The mesentery of the 

 ovary ; suspensory mesentery of 

 Fishes (zool., anat.). 



mesoventral (mes'ovgn'tral) a. [Gk. 



