from The American Heritage® Dictionary of the English Language, 4th Edition
- intransitive v. To merge into each other in a series of stages, forms, or types.
- n. A transitional stage, form, or type.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To pass or change from one state to another by steps or stages.
from The Century Dictionary and Cyclopedia
- To become alike gradually, or approach in character by degrees, as one animal or plant compared with another; be graduated with diminishing degrees of difference, or graded into one another, as two or more species. See the extract.
- n. An intermediate grade.
Sorry, no etymologies found.