English-Thai Dictionary
placenta
N รก ใน ครรภ์ rok-nai-kan
placentation
N การ จัดวาง ตำแหน่ง ของ รก การ สร้าง รก
Webster's 1828 Dictionary
PLACENTA
n.[L.] 1. In anatomy, the substance that connects the fetus to the womb, a soft roundish mass or cake by which the circulation is carried on between the parent and the fetus.
2. The part of a plant or fruit to which the seeds are attached.
PLACENTAL
a.Pertaining to the placenta.
PLACENTATION
n.In botany, the disposition of the cotyledons or lobes in the vegetation or germination of seeds.
Webster's 1913 Dictionary
PLACENTA
Pla *cen "ta, n.; pl. L. Placentæ, E. Placentas. Etym: [L., a cake, Gr.
1. (Anat. )
Defn: The vascular appendage which connects the fetus with the parent, and is cast off in parturition with the afterbirth.
Note: In most mammals the placenta is principally developed from the allantois and chorion, and tufts of vascular villi on its surface penetrate the blood vessels of the parental uterus, and thus establish a nutritive and excretory connection between the blood of the fetus and that of the parent, though the blood itself does not flow from one to the other.
2. (Bot. )
Defn: The part of a pistil or fruit to which the ovules or seeds are attached.
PLACENTAL
PLACENTAL Pla *cen "tal, a.
1. Of or pertaining to the placenta; having, or characterized by having, a placenta; as, a placental mammal.
2. (Zoöl.)
Defn: Of or pertaining to the Placentalia.
PLACENTAL
PLACENTAL Pla *cen "tal, n. (Zoöl.)
Defn: One of the Placentalia.
PLACENTALIA
Plac `en *ta "li *a, n. pl. Etym: [NL. ] (Zoöl.)
Defn: A division of Mammalia including those that have a placenta, or all the orders above the marsupials.
PLACENTARY
PLACENTARY Pla *cen "ta *ry, a.
Defn: Having reference to the placenta; as, the placentary system of classification.
PLACENTATION
PLACENTATION Plac `en *ta "tion, n.
1. (Anat. )
Defn: The mode of formation of the placenta in different animals; as, the placentation of mammals.
2. (Bot. )
Defn: The mode in which the placenta is arranged or composed; as, axile placentation; parietal placentation.
New American Oxford Dictionary
placenta
pla cen ta |pləˈsentə pləˈsɛn (t )ə | ▶noun ( pl. placentae |-tē | or placentas ) 1 a flattened circular organ in the uterus of pregnant eutherian mammals, nourishing and maintaining the fetus through the umbilical cord. The placenta consists of vascular tissue in which oxygen and nutrients can pass from the mother's blood into that of the fetus, and waste products can pass in the reverse direction. The placenta is expelled from the uterus at the birth of the fetus, when it is often called the afterbirth. Marsupials and monotremes do not develop placentas. 2 Botany (in flowers ) part of the ovary wall to which the ovules are attached. ORIGIN late 17th cent.: from Latin, from Greek plakous, plakount- ‘flat cake, ’ based on plax, plak- ‘flat plate. ’
placental
pla cen tal |pləˈsentl pləˈsɛn (t )l | ▶adjective of or relating to a placenta. • Zoology relating to or denoting mammals that possess a placenta; eutherian. ▶noun Zoology a placental mammal. See Eutheria.
placenta previa
pla cen ta pre vi a |pləˈsentə ˈprēvēa pləˌsɛntə ˈpriviə |(Brit. placenta praevia ) ▶noun Medicine a condition in which the placenta partially or wholly blocks the neck of the uterus, thus interfering with normal delivery of a baby. ORIGIN early 19th cent.: from placenta and Latin praevia ‘going before. ’
placentation
plac en ta tion |ˌplasənˈtāSHən ˌplæsnˈteɪʃən | ▶noun Anatomy & Zoology the formation or arrangement of a placenta or placentae in a woman's or female animal's uterus. • Botany the arrangement of the placenta or placentae in the ovary of a flower.
Oxford Dictionary
placenta
placenta |pləˈsɛntə | ▶noun ( pl. placentae |-tiː | or placentas ) 1 a flattened circular organ in the uterus of pregnant eutherian mammals, nourishing and maintaining the fetus through the umbilical cord. The placenta consists of vascular tissue in which oxygen and nutrients can pass from the mother's blood into that of the fetus, and waste products can pass in the reverse direction. The placenta is expelled from the uterus at the birth of the fetus, when it is often called the afterbirth. Marsupials and monotremes do not develop placentas. 2 Botany (in flowers ) part of the ovary wall to which the ovules are attached. ORIGIN late 17th cent.: from Latin, from Greek plakous, plakount- ‘flat cake ’, based on plax, plak- ‘flat plate ’.
placental
pla |cen ¦tal |pləˈsent (ə )l | ▶adjective relating to a placenta. • Zoology relating to or denoting mammals that possess a placenta; eutherian. ▶noun Zoology a placental mammal. See Eutheria.
placental abruption
pla |cen ¦tal abrup ¦tion ▶noun see abruption.
placenta praevia
placenta praevia |ˈpriːvɪə |(US placenta previa ) ▶noun [ mass noun ] Medicine a condition in which the placenta partially or wholly blocks the neck of the uterus, so interfering with normal delivery of a baby. ORIGIN early 19th cent.: from placenta and Latin praevia ‘going before ’, feminine of praevius.
placentation
placentation |ˌplas (ə )nˈteɪʃ (ə )n | ▶noun [ mass noun ] Anatomy & Zoology the formation or arrangement of a placenta or placentae in a woman's or female animal's uterus. • Botany the arrangement of the placenta or placentae in the ovary of a flower.
French Dictionary
placenta
placenta n. m. (pl. placentas ) nom masculin Organe reliant l ’embryon à l ’utérus maternel. Prononciation Les lettres en se prononcent in, [plasɛ̃ta ]
placentaire
placentaire adj. adjectif Relatif au placenta. : Des échanges placentaires. Prononciation Les lettres en se prononcent in, [plasɛ̃tɛr ]
Spanish Dictionary
placenta
placenta nombre femenino 1 Órgano que desarrollan durante la gestación las hembras de los mamíferos, exceptuados los monotremas y marsupiales, que consiste en una masa esponjosa, adherida al útero, y a través de la cual se establece el intercambio de oxígeno y sustancias nutritivas entre la madre y el embrión :en la última fase del parto, la placenta se desprende del útero y se expulsa .placenta previa Placenta que se desarrolla en el segmento inferior del útero y que causa hemorragias importantes durante el embarazo y el parto .2 bot Tejido interno del ovario de la flor, al cual están unidos los óvulos :la placenta se encuentra en el borde interno del carpelo .ETIMOLOGÍA Préstamo (s. xviii ) del latín placenta ‘torta ’, por comparación de forma .
placentación
placentación nombre femenino 1 biol Formación de la placenta durante el desarrollo embrionario de los mamíferos .2 bot Disposición de las placentas, y por consiguiente de los óvulos, en el ovario de los vegetales .
placentario, -ria
placentario, -ria adjetivo 1 De la placenta o relacionado con este órgano :tejido placentario; el medicamento administrado a la madre atraviesa la barrera placentaria y actúa sobre el feto .2 adjetivo /nombre masculino zool [mamífero ] Que pertenece a la infraclase de los placentarios :todos los mamíferos, menos los marsupiales y los monotremas, son placentarios .SINÓNIMO euterio .3 placentarios nombre masculino plural zool Infraclase de mamíferos vivíparos cuyas hembras están dotadas de mamas y placenta completamente desarrolladas .SINÓNIMO euterios .
Sanseido Wisdom Dictionary
placenta
pla cen ta /pləséntə /名詞 複 ～s, ～e /-tiː /C 〘解剖 〙(動物の )胎盤 ; 〘植 〙胎座 .pla c é n tal 形容詞
The Wordsmith Dictionary