| CEBOIDS | • ceboids n. Plural of ceboid. • CEBOID n. one of a family of monkeys, also CEBID. |
| CONOIDS | • conoids n. Plural of conoid. • CONOID n. anything like a cone in form. |
| CUBOIDS | • cuboids n. Plural of cuboid. • CUBOID n. a cube-shaped bone. |
| FUCOIDS | • fucoids n. Plural of fucoid. • FUCOID n. a seaweed of the genus Fucus, also FUCOIDAL. |
| GADOIDS | • gadoids n. Plural of gadoid. • GADOID n. a member of the cod family, also GADID. |
| GANOIDS | • ganoids n. Plural of ganoid. • GANOID n. a type of fish with shiny smooth scales, such as sturgeon and gar. |
| HALOIDS | • haloids n. Plural of haloid. • HALOID n. a compound of a halogen with a metal or radical, also HALID, HALIDE. |
| HYPOIDS | • HYPOID n. a type of bevel gear in which driving and driven shafts are at right angles but not in the same plane. |
| KELOIDS | • keloids n. Plural of keloid. • keloids v. Third-person singular simple present indicative form of keloid. • KELOID n. a hard growth of scar tissue, also CHELOID. |
| LIPOIDS | • lipoids n. Plural of lipoid. • LIPOID n. any of a class of fatty substances, also LIPID, LIPIDE, LIPIN. |
| MELOIDS | • meloids n. Plural of meloid. • MELOID n. a blister beetle. |
| MUCOIDS | • mucoids n. Plural of mucoid. • MUCOID n. a substance like mucus, found in connective tissue. |
| OPIOIDS | • opioids n. Plural of opioid. • OPIOID n. a peptide that acts like opium. |
| PELOIDS | • peloids n. Plural of peloid. • PELOID n. a mud or other natural medium used as a medicinal plaster. |
| TOROIDS | • toroids n. Plural of toroid. • TOROID n. anything shaped like a doughnut or anchor-ring. |
| TOXOIDS | • toxoids n. Plural of toxoid. • TOXOID n. a toxin treated to reduce toxicity and used in immunisation. |
| VIROIDS | • viroids n. Plural of viroid. • viroids prop.n. A taxonomic name, sometimes considered an order, of a group of subviral agents that can be pathogenic… • VIROID n. a viruslike plant pathogen. |
| ZONOIDS | • zonoids n. Plural of zonoid. • ZONOID n. a finite vector sum of line segments. |