# moderator

/ˈmɑdɝˌeɪtɝ/ (US) · /mˈɒdəɹˌeɪtɐ/ (UK)

Source: https://englishreference.com/word/moderator
Updated: 2026-08-08

## Senses

### 1. online/community manager

noun · CEFR B2 · Informal

a person who manages an online forum or social media group to make sure people follow the rules.

For teachers: an individual responsible for monitoring and managing content within an online community or social media platform to ensure compliance with terms of service.

- The moderator removed the rude comments from the discussion board.
- Volunteer moderators often face the difficult task of balancing free speech with the need to prevent harassment in large digital communities.

### 2. debate/discussion leader

noun · CEFR B2

a person who leads a public discussion or debate to make sure it stays fair and organized.

For teachers: a neutral participant who presides over a debate or panel discussion to regulate the flow of conversation and enforce time limits.

- The moderator asked both candidates to stop talking when their time was up.
- A skilled moderator can steer a heated political debate back toward substantive issues when the participants begin to trade personal insults.

### 3. exam quality controller

noun · CEFR C1 · British English · Formal

a person who checks that different teachers are marking exams in the same fair way.

For teachers: an official who monitors the marking of examinations by different examiners to ensure consistency and adherence to national standards.

- The external moderator reviewed the students' essays to check the grades were fair.
- After the initial marking phase, a moderator was appointed to resolve the discrepancies between the two internal assessors' scores.

### 4. nuclear physics

noun · CEFR C2 · Technical

a substance, like water or graphite, used in a nuclear reactor to slow down particles.

For teachers: a medium used in a nuclear reactor to reduce the velocity of fast neutrons, thereby increasing the probability of further fission reactions.

- Graphite is often used as a moderator in certain types of nuclear power plants.
- The reactor's design relies on heavy water acting as a moderator to maintain a stable and controlled chain reaction.

### 5. church leader

noun · CEFR C2 · Formal

the person in charge of a meeting or group in the Presbyterian church.

For teachers: the presiding officer of a synod or general assembly within the Presbyterian ecclesiastical tradition.

- The Moderator of the General Assembly opened the meeting with a prayer.
- Each year, the synod elects a new moderator to oversee the administrative and spiritual functions of the regional church body.

## Examples

- The moderator deleted the rude comments from the forum.
- During the televised debate, the moderator asked each candidate to stick to their two-minute time limit.
- Effective community management often relies on a skilled moderator who can de-escalate tensions without appearing to censor legitimate, albeit passionate, disagreements among the membership.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.