| Term | Definition |
|---|---|
| immunologic functions | Production and action of cells that fight disease or infection. Hits - 1560 |
| impaired | Being classified as weakened or damaged. Hits - 1522 |
| impending | Is about to happen. Hits - 1630 |
| impenetrable | Impossible to pass through or enter. Hits - 1792 |
| indigenous breeds | Originating or occurring naturally in a particular place, native Hits - 1759 |
| indiscriminately | In a random manner; unsystematically. Hits - 1673 |
| indistinguishable | Not being able to be identified as different or distinct. Hits - 1707 |
| inexplicable | Unable to be explained or accounted for. Hits - 1678 |
| infertility | The inability to conceive children or young. Hits - 1617 |
| infestation | The presence of an unusually large number of insects or animals in a place, typically causing damage or disease Hits - 1725 |
| innumerable | Too many to be counted (often used hyperbolically). Hits - 1706 |
| insolvent | Being unable to pay debts owed. Hits - 1535 |
| integral part | It is necessary to the completeness of the whole: This point Hits - 1668 |
| intensification | The action of making or becoming more intense. Hits - 1482 |
| interbreeding | (with reference to an animal) breed or cause to breed with another of a different race or species Hits - 1727 |