# SPD

> English word · Noun · frequency rank #20,781

## Definitions
1. Initialism of schizoid personality disorder.
2. Initialism of schizotypal personality disorder.
3. Initialism of sadistic personality disorder.
4. Initialism of sensory processing disorder.
5. Initialism of spectral power distribution.
6. Initialism of serial presence detect.
7. Initialism of summary plan description.
8. Initialism of surge protective device (surge protector).
9. Initialism of symphysis pubis dysfunction.

## Etymology
Abbreviation

## Easily confused with
- **SS** (https://plainspell.com/en/vs/spd-vs-ss)
- **su** (https://plainspell.com/en/vs/spd-vs-su)
- **SW** (https://plainspell.com/en/vs/spd-vs-sw)
- **SV** (https://plainspell.com/en/vs/spd-vs-sv)
- **Sy** (https://plainspell.com/en/vs/spd-vs-sy)
- **sun** (https://plainspell.com/en/vs/spd-vs-sun)
- **sub** (https://plainspell.com/en/vs/spd-vs-sub)
- **sum** (https://plainspell.com/en/vs/spd-vs-sum)
- **spy** (https://plainspell.com/en/vs/spd-vs-spy)
- **sue** (https://plainspell.com/en/vs/spd-vs-sue)
- **SUV** (https://plainspell.com/en/vs/spd-vs-suv)
- **sup** (https://plainspell.com/en/vs/spd-vs-sup)
- **STD** (https://plainspell.com/en/vs/spd-vs-std)
- **SQL** (https://plainspell.com/en/vs/spd-vs-sql)
- **STA** (https://plainspell.com/en/vs/spd-vs-sta)
- **STR** (https://plainspell.com/en/vs/spd-vs-str)
- **STS** (https://plainspell.com/en/vs/spd-vs-sts)
- **Stu** (https://plainspell.com/en/vs/spd-vs-stu)
- **SSD** (https://plainspell.com/en/vs/spd-vs-ssd)
- **ssh** (https://plainspell.com/en/vs/spd-vs-ssh)

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/spd