# SD

> English word · Proper noun · frequency rank #8,482

## Definitions
1. Initialism of South Dakota: a state of the United States.
2. Initialism of Secure Digital: a non-volatile memory card format developed for use in portable devices.

## Easily confused with
- **so** (https://plainspell.com/en/vs/sd-vs-so)
- **se** (https://plainspell.com/en/vs/sd-vs-se)
- **SI** (https://plainspell.com/en/vs/sd-vs-si)
- **SS** (https://plainspell.com/en/vs/sd-vs-ss)
- **SP** (https://plainspell.com/en/vs/sd-vs-sp)
- **su** (https://plainspell.com/en/vs/sd-vs-su)
- **sf** (https://plainspell.com/en/vs/sd-vs-sf)
- **sh** (https://plainspell.com/en/vs/sd-vs-sh)
- **SM** (https://plainspell.com/en/vs/sd-vs-sm)
- **SW** (https://plainspell.com/en/vs/sd-vs-sw)
- **SL** (https://plainspell.com/en/vs/sd-vs-sl)
- **SG** (https://plainspell.com/en/vs/sd-vs-sg)
- **SK** (https://plainspell.com/en/vs/sd-vs-sk)
- **SV** (https://plainspell.com/en/vs/sd-vs-sv)
- **SJ** (https://plainspell.com/en/vs/sd-vs-sj)
- **Sy** (https://plainspell.com/en/vs/sd-vs-sy)
- **she** (https://plainspell.com/en/vs/sd-vs-she)
- **see** (https://plainspell.com/en/vs/sd-vs-see)
- **set** (https://plainspell.com/en/vs/sd-vs-set)
- **six** (https://plainspell.com/en/vs/sd-vs-six)

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