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v2026.1714 entries · CC-BY 4.0
Dictionary termTrack EStablev2026.2

Subtask

An internal subdivision of a project task, used for detailed planning, effort tracking, and execution management, typically not formally reported to the sponsor but tracked within the consortium or research group.

ByCASRAI Editorial Board
· Last updated 21 May 2026

Examples

Worked examples

  • Is an instance

    Subtask T3.2.1 'Implement learning-rate schedule sweep' has a 2-week internal deadline assigned to a single researcher.

  • Is an instance

    An internal Gantt chart tracks 87 subtasks across 24 tasks and 6 work packages.

Counter-examples

Looks similar, but isn't

  • Not an instance

    A whole task is not a subtask.

  • Not an instance

    A formal sponsor-reported milestone is not a subtask.

Editorial commentary

Subtasks (e.g., T3.2.1) provide the finest level of project-management granularity in most research project plans. They are used by work-package leaders and partners to plan day-to-day execution, allocate effort across the team, and produce internal Gantt charts. Subtasks are usually invisible to the funder but visible in internal collaboration tools (project wikis, Jira boards, Notion). Subtask discipline is a hallmark of well-managed projects.

References

  • PMBOK Guide task decomposition; Horizon Europe internal project-management practices.

Also known as

Sub-task · Activity (project) · Sub-activity

Machine-readable encodings

Use in your systems

JATS XML <role> element
xml
<role vocab="credit"
      vocab-identifier="https://casrai.org/dictionary/"
      vocab-term="Subtask"
      vocab-term-identifier="https://casrai.org/dictionary/term/subtask" />
Schema.org DefinedTerm (JSON-LD)
json
{
  "@context": "https://schema.org",
  "@type": "DefinedTerm",
  "name": "Subtask",
  "identifier": "https://casrai.org/dictionary/term/subtask",
  "description": "An internal subdivision of a project task, used for detailed planning, effort tracking, and execution management, typically not formally reported to the sponsor but tracked within the consortium or research group.",
  "inDefinedTermSet": "https://casrai.org/dictionary/domain/research-lifecycle-stages-and-project-metadata/",
  "url": "https://casrai.org/dictionary/term/subtask",
  "sameAs": [
    "Sub-task",
    "Activity (project)",
    "Sub-activity"
  ],
  "license": "https://creativecommons.org/licenses/by/4.0/"
}

Adopted by research universities worldwide

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