@@ -54,6 +54,39 @@ Glossary
5454 Python files). See :ref: `package-formats ` for more information.
5555
5656
57+ Built Metadata
58+
59+ The concrete form :term: `Core Metadata ` takes
60+ when included inside an installed :term: `Project ` (``METADATA `` file)
61+ or a :term: `Distribution Archive `
62+ (``PKG-INFO `` in a
63+ :term: `Sdist <Source Distribution (or "sdist")> `
64+ and ``METADATA `` in a :term: `Wheel `).
65+
66+
67+ Core Metadata
68+
69+ The :ref: `specification <core-metadata >`
70+ and the set of :term: `Core Metadata Field `\s it defines
71+ that describe key static attributes of
72+ a :term: `Distribution Package ` or :term: `Installed Project `.
73+
74+
75+ Core Metadata Field
76+
77+ A single key-value pair
78+ (or sequence of such with the same name, for multiple-use fields)
79+ defined in the :term: `Core Metadata ` spec
80+ and stored in the :term: `Built Metadata `.
81+ Notably, distinct from a :term: `Pyproject Metadata Key `.
82+
83+
84+ Distribution Archive
85+
86+ The physical distribution artifact (i.e. a file on disk)
87+ for a :term: `Distribution Package `.
88+
89+
5790 Distribution Package
5891
5992 A versioned archive file that contains Python :term: `packages <Import
@@ -106,6 +139,14 @@ Glossary
106139 is also commonly called a "package". See :ref: `distribution-package-vs-import-package `
107140 for a breakdown of the differences.
108141
142+
143+ Installed Project
144+
145+ A :term: `Project ` that is installed for use with
146+ a Python interpreter or :term: `Virtual Environment `,
147+ as described in the specicifcation :ref: `recording-installed-packages `.
148+
149+
109150 Module
110151
111152 The basic unit of code reusability in Python, existing in one of two
@@ -149,12 +190,64 @@ Glossary
149190 'bar'.
150191
151192
193+ Project Root Directory
194+
195+ The filesystem directory in which
196+ a :term: `Project `'s :term: `source tree <Project Source Tree> ` is located.
197+
198+
199+ Project Source Tree
200+
201+ The on-disk format of a :term: `Project ` used for development,
202+ containing its raw source code before being packaged
203+ into a
204+ :term: `Source Distribution <Source Distribution (or "sdist")> `
205+ or :term: `Built Distribution `.
206+
207+
208+ Project Source Metadata
209+
210+ Metadata defined by the package author
211+ in a :term: `Project `'s :term: `source tree <Project Source Tree> `,
212+ to be transformed into :term: `Core Metadata field `\s
213+ in the :term: `Built Metadata `
214+ by the project's :term: `build backend <Build Backend> `.
215+ Can be written as :term: `Pyproject Metadata `,
216+ or in a tool-specific format
217+ (under the ``[tool] `` table in ``pyproject.toml ``,
218+ or in a tool's own configuration file).
219+
220+
152221 Pure Module
153222
154223 A :term: `Module ` written in Python and contained in a single ``.py `` file (and
155224 possibly associated ``.pyc `` and/or ``.pyo `` files).
156225
157226
227+ Pyproject Metadata
228+
229+ The :term: `Project Source Metadata ` format
230+ defined by the :ref: `declaring-project-metadata ` specification
231+ and originally introduced in :pep: `621 `,
232+ stored as :term: `Pyproject Metadata Key `\s
233+ under the ``[project] `` table of a :term: `pyproject.toml ` file.
234+ Notably, *not * a tool-specific source metadata format
235+ under the ``[tool] `` table in ``pyproject.toml ``.
236+
237+
238+ Pyproject Metadata Key
239+
240+ A top-level TOML key in the ``[project] `` table in ``pyproject.toml ``;
241+ part of the :term: `Pyproject Metadata `.
242+ Notably, distinct from a :term: `Core Metadata Field `.
243+
244+
245+ Pyproject Metadata Subkey
246+
247+ A second-level TOML key under a table-valued
248+ :term: `Pyproject Metadata Key `.
249+
250+
158251 Python Packaging Authority (PyPA)
159252
160253 PyPA is a working group that maintains many of the relevant
@@ -236,7 +329,7 @@ Glossary
236329
237330 Source Distribution (or "sdist")
238331
239- A :term: `distribution <Distribution Package > ` format (usually generated
332+ A :term: `distribution <Distribution Archive > ` format (usually generated
240333 using ``python -m build --sdist ``) that provides metadata and the
241334 essential source files needed for installing by a tool like :ref: `pip `,
242335 or for generating a :term: `Built Distribution `. See :ref: `package-formats `
@@ -264,10 +357,22 @@ Glossary
264357 wide. For more information, see the section on :ref: `Creating and using
265358 Virtual Environments`.
266359
360+
361+ Wheel Format
267362 Wheel
268363
269- The standard :term: `Built Distribution ` format.
364+ The standard :term: `Built Distribution ` format
365+ originally introduced in :pep: `427 `
366+ and defined by the :ref: `binary-distribution-format ` specification.
270367 See :ref: `package-formats ` for more information.
368+ Not to be confused with its reference implementation,
369+ the :term: `Wheel Project `.
370+
371+
372+ Wheel Project
373+
374+ The PyPA reference implementation of the :term: `Wheel Format `; see :ref: `wheel `.
375+
271376
272377 Working Set
273378
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