| ALPROSTADILS | Sorry, definition not available. |
| BRISTLETAILS | • bristletails n. Plural of bristletail. • bristle-tails n. Plural of bristle-tail. • BRISTLETAIL n. another name for the silverfish. |
| BROMOURACILS | • bromouracils n. Plural of bromouracil. • BROMOURACIL n. a uracil derivative that is an analog of thymine and pairs readily with adenine and sometimes with guanine. |
| COUNTERFOILS | • counterfoils n. Plural of counterfoil. • COUNTERFOIL n. part of ticket or cheque retained by giver. |
| COUNTERVAILS | • countervails v. Third-person singular simple present indicative form of countervail. • COUNTERVAIL v. to counterbalance, neutralise. |
| FLICKERTAILS | • flickertails n. Plural of flickertail. • FLICKERTAIL n. in North America, a ground-squirrel. |
| GEMFIBROZILS | • GEMFIBROZIL n. a drug that lowers the level of low-density lipoproteins in the blood and is therefore used to treat patients with hypercholesterolaemia. |
| GERONTOPHILS | • GERONTOPHIL n. a person who experiences gerontophilia, a sexual attraction towards old people, also GERONTOPHILE. |
| ICHNOFOSSILS | • ichnofossils n. Plural of ichnofossil. • ICHNOFOSSIL n. a fossil footprint. |
| MACROFOSSILS | • macrofossils n. Plural of macrofossil. • MACROFOSSIL n. a fossil large enough to be seen with the naked eye. |
| MAINTOPSAILS | • MAINTOPSAIL n. the sail above the mainsail. |
| MICROFIBRILS | • microfibrils n. Plural of microfibril. • MICROFIBRIL n. a fine fibril. |
| MICROFOSSILS | • microfossils n. Plural of microfossil. • MICROFOSSIL n. a very small fossil. |
| NEUROFIBRILS | • neurofibrils n. Plural of neurofibril. • NEUROFIBRIL n. one of a large number of fine fibres present in the cytoplasm of a nerve cell. |
| SCISSORTAILS | • scissortails n. Plural of scissortail. • SCISSORTAIL n. an American flycatcher. |
| SWALLOWTAILS | • swallowtails n. Plural of swallowtail. • SWALLOWTAIL n. a kind of butterfly. |
| UNDERFULFILS | • UNDERFULFIL v. to fail to fulfil completely, also UNDERFULFILL. |