Occurring or developing slowly or by small increments: gradual erosion; a gradual slope.
Roman Catholic Church
1. The liturgical book containing the chants for the Mass.
2. A biblical text sung between the Epistle and the Gospel of the Mass.
[Middle English, having steps, from Medieval Latin graduālis, from Latin gradus, step; see GRADE. N., Middle English, from Medieval Latin graduāle, the part of the service sung by the choir from the altar steps, gradual, from neuter sing. of graduālis.]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.