English word disciplinary comes from Proto-Indo-European *dḱ-eh₁-yé-, Proto-Indo-European *di-dḱ-sḱé-ti, Proto-Indo-European *di-dḱ-ské-, Latin discere, and later Latin discipulus (Student, pupil, disciple.)
| Dictionary entry | Language | Definition |
|---|---|---|
| *dḱ-eh₁-yé- | Proto-Indo-European (ine) | |
| *di-dḱ-sḱé-ti | Proto-Indo-European (ine) | |
| *di-dḱ-ské- | Proto-Indo-European (ine) | |
| discere | Latin (lat) | |
| discipulus | Latin (lat) | Student, pupil, disciple. |
| *dikskō | Proto-Italic (itc-pro) | Learn. |
| disco | Latin (lat) | (drama) I study, practice. I learn. |
| disciplinaris | Latin (lat) | |
| disciplinarius | Vulgar Latin (la-vul) | |
| disciplinary | English (en) | For the purpose of imposing punishment.. Having to do with discipline, or with the imposition of discipline.. Of or relating to an academic field of study. A disciplinary action. |