| Term | Definition |
|---|---|
| prolonged anoestrus | Applies to nonhuman mammals: A state or interval of sexual inactivity between two periods of estrus. anestrum, Hits - 1101 |
| prolonged suckling | An Hits - 776 |
| prophase | The first stage of cell division, before metaphase, during which the chromosomes become visible as paired chromatids and the nuclear envelope disappears. The first prophase of meiosis includes the reduction division. Hits - 939 |
| protein synthesis | Is a core biological process, occurring inside Hits - 823 |
| protozoa | A phylum or grouping of phyla which comprises the single-celled microscopic animals, which include amoebas, flagellates, ciliates, sporozoans, and many other forms. They are now usually treated as a number of phyla belonging to the kingdom Hits - 913 |
| protozoan | A single-celled microscopic animal of a group of phyla of the kingdom Hits - 1063 |
| protozoan species | Are one-celled Hits - 818 |
| provision | The action of providing or supplying something for use. Hits - 995 |
| pulmonary vessels | They are responsible for carrying the oxygenated blood to the heart from the lungs and carrying the deoxygenated blood from the heart to the lungs. Hits - 809 |
| pulsatile | Pulsating; throbbing. Hits - 996 |
| pyrimidine | Is an aromatic heterocyclic organic compound similar to pyridine. One of the three diazines, it has the nitrogen atoms at positions 1 and 3 in the ring. The other diazines are pyrazine and pyridazine. In nucleic acids, three types of nucleobases are pyrimidine derivatives: cytosine, thymine, and uracil. Hits - 813 |