pro·lu·sion 
(prō-lzhən)
(prō-lzhən)n.
1. A preliminary exercise.
2. An essay written as a preface to a more detailed work.
[Latin prōlūsiō, prōlūsiōn-, from prōlūsus, past participle of prōlūdere, to practice beforehand : prō-, before; see PRO-1 + lūdere, to play; see leid- in the Appendix of Indo-European roots.]
pro·luso·ry (-sə-rē, -zə-) adj.
- Indo-European root: ghwer-
- Indo-European root: ghwībh-
- Indo-European root: ghē-
- Indo-European root: gleubh-
- Indo-European root: gnō-
- Indo-European root: gr̥ə-no-
- Indo-European root: gwei-
- Indo-European root: gwelə-
- Indo-European root: gwen-
- Indo-European root: gwerə-
- Indo-European root: gwerə-
- Indo-European root: gwet-
- Indo-European root: gwhedh-
- Indo-European root: gwhen-
- Indo-European root: gwher-
- Indo-European root: gwhren-
- Indo-European root: gwhrē-
- Indo-European root: gwhī-
- Indo-European root: gwou-
- Indo-European root: gwā-
- Indo-European root: gāu-
- Indo-European root: i-
- Indo-European root: kad-
- Indo-European root: kai-
- Indo-European root: kailo-