glia

IPA/ˈɡlaɪ.ə/
IPA/ˈɡliː.ə/

glia — noun

  • gliasingular
  • gliasplural

1. a type of cell found in the brain and spinal cord whose main job is to surround,

1.nounC2
Definition

a type of cell found in the brain and spinal cord whose main job is to surround, insulate, and protect neurons, keeping the nerve tissue healthy.

Example

The neurologist examined how glia interact with neurons in the patient's brain scan.

collocation: glia interact with neurons

One type of glia, called astrocytes, helps repair damaged nerve tissue after an injury.

pattern: One type of glia, called [specific type]

Common collocations
  • glia interact with
  • types of glia
  • glia respond to
  • glia in the brain
  • glia in the spinal cord
Synonyms
  • glial cell

    more specific and countable; 'glial cell' always refers to an individual cell, whereas 'glia' can be ambiguous between cell and tissue

  • neuroglial cell

    fuller technical term, less common in everyday medical speech

Antonyms
  • neuron

    glia support neurons but are a different cell type; they do not transmit electrical signals

Grammar Patterns

a glia

the glia

glia (plural)

Usage Note

Countable noun. Frequently used in the plural form when referring to multiple individual cells. Distinguish from sense 2, where the same word refers to the collective supportive tissue as a mass noun.

Common Mistakes

The glia in the brain is made of many different types.' (when referring to cells)
The glia in the brain are made of many different types.
when talking about individual cells, use the plural verb.
The neurologist studied how glia interacts with neurons.' (when referring to cells)
The neurologist studied how glia interact with neurons.
'glia' as a plural countable noun takes a plural verb.

2. the mesh of supportive material found inside the brain and spinal cord that wrap

2.nounC2
Definition

the mesh of supportive material found inside the brain and spinal cord that wraps around neurons, supplies them with nutrients, and keeps the nerve tissue healthy and working.

Example

The medical student learned that glia makes up about half the volume of the brain.

mass-noun pattern: glia makes up [fraction] of [body part]

Damage to the glia around a nerve cell can slow down the transmission of signals.

Common collocations
  • the glia surrounding
  • inflammation of the glia
  • glia responds to
  • damage to the glia
  • the glia in the central nervous system
Synonyms
  • neuroglia

    the full formal name; 'neuroglia' and 'glia' are interchangeable, but 'neuroglia' is more common in textbooks

  • glial tissue

    less common but clearer for learners — explicitly marks it as tissue rather than cells

Antonyms
  • gray matter

    gray matter is mostly neuron cell bodies; glia is the supportive matrix around them

Grammar Patterns

the glia

glia [singular verb]

Usage Note

Uncountable (mass) noun; takes a singular verb. Distinguish from sense 1, where the same word refers to the individual cells that make up the tissue. When the meaning is tissue-level, the definite article ('the glia') is common.

Common Mistakes

The glia are full of different types of cells.' (when referring to tissue)
The glia is full of different types of cells.
use a singular verb when discussing the tissue as a whole.
Glia are composed of astrocytes and oligodendrocytes.' (when meaning the tissue)
Glia is composed of astrocytes and oligodendrocytes.
the tissue as a whole takes a singular verb.

Word family

  • glial
    adjectiveC2
  • glial cell
    nounC2
  • neuroglia
    nounC2
  • neuroglial
    adjectiveC2
  • astrocyte
    nounC2
  • microglia
    nounC2
  • oligodendrocyte
    nounC2

Synonym discussion

Sense: noun/1

'Glia' (sense 1) refers to individual support cells in the nervous system, but it is often used as a collective plural. 'Glial cell' is the clearer singular form — use it when you need to count or specify one cell. 'Neuroglial cell' is the same thing but longer and more formal, mainly found in anatomy textbooks. 'Astrocyte' is a specific subtype of glial cell, not a synonym for glia as a whole. For example: 'An astrocyte is one type of glial cell, but not all glial cells are astrocytes.'

glia ↗glial cellneuroglial cellastrocyte

Common collocations

Nouns

  • neuron
  • support cell
  • nerve tissue
  • brain
  • spinal cord
  • central nervous system

Phrases

  • the role of glia
  • function of glia
  • types of glia
  • glia and neurons

Prepositions

  • in the brain
  • in the spinal cord
  • in the central nervous system
  • surrounding neurons

Etymology

GreekGermanEnglish

Shortened from the fuller term 'neuroglia', which was coined in the 19th century from Greek 'neuron' (νεῦρον, 'nerve') + 'glia' (γλία, 'glue'), describing the supportive 'glue' that holds the nervous system together. The shorter form 'glia' entered medical English in the late 1800s as the field of neuroscience expanded.

First known use

1891

1891, in the meaning defined above