#acardia

• Acardiac — Lacking a heart, or possessing a rudimentary, completely non-functional heart. In neonatology and fetal medicine, the term describes an 'acardiac fetus' (or acardiac twin), an extremely rare congenital anomaly occurring exclusively in monochorionic twin pregnancies due to Twin Reversed Arterial Perfusion (TRAP sequence). In this condition, the malformed fetus survives in utero only because it receives blood pumped by the heart of its healthy co-twin (the pump twin).
• Acardia — A congenital absence of the heart or a complete cessation in the ontogenetic development of the cardiac structure in a fetus. This severe structural anomaly is incompatible with independent extrauterine life and is documented almost exclusively within monochorionic multiple pregnancies with asymmetric development (TRAP sequence), where the affected fetus's blood circulation is maintained solely by its twin's heart through placental vascular anastomoses.
• Cashew tree — A medium tropical tree (Anacardium occidentale) native to South America (Brazil), but widely cultivated in India and Africa, famous for its accessory fruit from which the edible and oleaginous seeds popularly known as cashews are extracted. As an adjective, it describes an element, a leaf, a plant, or an organic substance belonging to the Anacardiaceae botanical family.
• Anacardiaceous plant — A dicotyledonous shrubby or arborescent plant, predominantly exotic or tropical, belonging to the cashew family (Anacardiaceae); in the plural, it designates this extensive botanical family of high economic and dietary importance, which includes famous species such as the cashew tree, mango, pistachio, and smoke tree. These plants are structurally characterized by the presence of secretory ducts containing resins, milky saps, or often irritating oily substances.
• Anacardiaceous — Pertaining to or characteristic of the cashew family (Anacardiaceae); a morphological and chemical descriptor applied to trees, leaves, fruits, or organic compounds secreted by plants related to cashew or mango, highlighting their structural connection to this taxonomic family within the order Sapindales.
• Cashew tree — A medium tropical tree belonging to the cashew family, widely cultivated for its fruits; the alternative or synonymous botanical designation for the cashew tree (Anacardium occidentale). This structural shrub produces a fleshy accessory fruit on top of which the cashew seed or nut develops, which is appreciated globally in the food industry.
• Atriogram — A graphic representation or physical/digital recording of the electrical, mechanical, or pressure activity specific to the cardiac atria, usually obtained through intracardiac catheterization or invasive electrophysiology. Its structural analysis allows for the precise identification of sinus conduction anomalies and pressure variations in the upper heart chambers.