Definition from Wiktionary, the free dictionary
From international -oid.
- indicates similarity in form with the root without being the root
A technical suffix, commonly used for geometric shapes, anatomical parts, and biological names of taxonomic units. Many of these, such as asteroido, are inherited and are not derivable within Esperanto.
- afiksoido: a morpheme which resembles an affix, but also behaves as a root, such as re-, dis-, ek-, -ebla, -enda, -ujo, -aro, -ido
- araneoida: arachnoid: resembling a spider or spider web
- arboida: arborescent: resembling a tree
- elipsoido: ellipsoid: a three-dimensional form with a cross-section in the shape of an ellipse
- koroida: cardioid: resembling a heart
- metaloido: metalloid: an element with some of the properties of a metal
- planedoido: dwarf planet: a celestial body with the shape and substance of a planet, such as Pluto
- sferoido: spheroid: a shape resembling a sphere