@@ -182,6 +182,10 @@ Glossary
182182 cluster
183183 See :term:`sharded cluster`.
184184
185+ cluster-to-cluster sync
186+ Synchronizes data between :term:`sharded clusters <sharded
187+ cluster>`. Also known as C2C sync.
188+
185189 collection
186190 A grouping of MongoDB :term:`documents <document>`. A collection
187191 is the equivalent of an :term:`RDBMS` table. A collection exists
@@ -595,10 +599,15 @@ Glossary
595599 data. MongoDB uses md5 to identify chunks of data for
596600 :term:`GridFS`. See :doc:`/reference/command/filemd5`.
597601
602+ member
603+ An individual :term:`mongod` process. A :term:`replica set` has
604+ multiple members. A member is also known as a :term:`node`.
605+
598606 MIB
599607 Management Information Base. MongoDB uses MIB files to define the type of
600608 data tracked by SNMP in the MongoDB Enterprise edition.
601609
610+
602611 MIME
603612 Multipurpose Internet Mail Extensions. A standard set of type and
604613 encoding definitions used to declare the encoding and type of data
@@ -665,6 +674,10 @@ Glossary
665674 the partition can communicate to the other side only if they
666675 originate the communications channel.
667676
677+ node
678+ An individual :term:`mongod` process. A :term:`replica set` has
679+ multiple nodes. A node is also known as a :term:`member`.
680+
668681 noop
669682 No Operation (noop), is an I/O operation scheduler that allocates
670683 I/O bandwidth for incoming processes based on a first in, first out
@@ -680,6 +693,9 @@ Glossary
680693 counter. MongoDB uses ObjectId values as the default values for
681694 :term:`_id` fields.
682695
696+ object identifier
697+ See :term:`ObjectId`.
698+
683699 operator
684700 A keyword beginning with a ``$`` used to express an update,
685701 complex query, or data transformation. For example, ``$gt`` is the
@@ -1135,6 +1151,10 @@ Glossary
11351151 "EPSG:4326: WGS 84" specification:
11361152 `<http://spatialreference.org/ref/epsg/4326/>`_.
11371153
1154+ window operator
1155+ Returns values from a span of documents from a collection. See
1156+ :ref:`window operators <setWindowFields-window-operators>`.
1157+
11381158 working set
11391159 The data that MongoDB uses most often.
11401160
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