| Word | Definitions | Synonyms |
|---|---|---|
| nidation | (noun) (embryology) the organic process whereby a fertilized egg becomes implanted in the lining of the uterus of placental mammals | Synonyms: implantation |
| nidicolous | (adjective) (of birds) remaining in the nest for a time after hatching | - |
| nidifugous | (adjective) (of birds) leaving the nest shortly after hatching | - |
| nidus | (noun) a nest in which spiders or insects deposit their eggs | - |
| (noun) a central point or locus of an infection in an organism | Synonyms: focal point, focus |