#ovoid

• Acaroid — Resembling a mite in shape or appearance; ovoid, compact, and lacking visible body segmentation. In botany and chemistry, the term designates 'acaroid resin' (or acaroid gum), a natural yellow or reddish resinous substance extracted from Australian plants of the genus Xanthorrhoea, traditionally used in industry for manufacturing varnishes, spirits, printing inks, and in pyrotechnics due to its excellent burning properties.
• Amygdal — A specialized term originating from Ancient Greek, historically used in botany to denote the kernel or fruit of the almond tree (Prunus dulcis) or, in an adjectival structural sense, an element shaped like or possessing the consistency of an almond. In ancient scientific terminology, it served as a root for chemical and anatomical compounds related to bitter almonds or ovoid lymphatic structures.
• Amygdaliform — Having the shape of an almond; ovoid, elongated, and slightly flattened at the ends, presenting a specific biconvex geometry. This structural descriptor is widely used in anatomy to define nuclei or organs, in mineralogy for rock aggregates, and in archaeology to classify chipped stone axes from the Paleolithic era.