Alecithal
Definition
Relating to eggs (ovules) or animal species: lacking vitellus (yolk) or presenting an extremely reduced and insignificant amount of reserve nutritive substances in the cytoplasm. This structural type of egg is characteristic of placental mammals, where embryo nutrition is provided directly by the maternal organism through the placenta, leading to total and equal segmentation.
Bilingual Equivalents
- Alecithal
- Yolkless
Grammatical & Source Details
| Inflection Type | Variable adjective with standard gender and number morphological variations for syntactic agreement. |
| Formation | Neoclassical scientific compound combining morphological roots to denote an alternative or absent yolk configuration. |
| Spelling / Pronunciation | [a.lo.le.ˈt͡sit] |
| Source | Encyclopedia of Comparative Embryology and Cellular Biology |
Contextual Usage Examples
RO: Ovulul uman este un exemplu tipic de celulă alolecită, deoarece nu are nevoie de rezerve mari de hrană pentru a supraviețui inițial.
EN: The human ovule is a typical example of an alecithal cell, as it does not need large food reserves to survive initially.
RO: Segmentarea de tip holoblastic este strâns legată de caracterul alolecit al oului, permițând diviziuni celulare simetrice.
EN: Holoblastic cleavage is closely linked to the alecithal character of the egg, allowing symmetrical cell divisions.
RO: Biologul a analizat la microscop structura unui ou alolecit pentru a studia primele faze ale formării blastulei.
EN: The biologist analyzed the structure of an alecithal egg under the microscope to study the first phases of blastula formation.
Idioms & Phrases
Ou alolecit / Alecithal egg
RO: Celulă ou caracterizată prin absența totală sau microscopică a granulelor de vitelus nutritiv în masa citoplasmatică.
EN: An egg cell characterized by the total or microscopic absence of nutritive yolk granules within the cytoplasmic mass.
Morfologie alolecită / Alecithal morphology
RO: Configurație structurală a zigotului care favorizează o dezvoltare timpurie dependentă direct de sursele externe de hrănire.
EN: A structural configuration of the zygote that favors early development directly dependent on external feeding sources.
Tip de ou alolecit / Alecithal egg type
RO: Categorie taxonomică în embriologia comparată folosită pentru a clasifica ovulele mamiferelor superioare.
EN: A taxonomic category in comparative embryology used to classify the ovules of higher mammals.
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