NDC

noun

By · According to Wiktionary data (CC BY-SA) ·

"ndc" is a 3-letter English headword indexed on PlainSpell.

The verdict

“NDC” sits in 20 confusable pairs (corpus #46,084) as a noun. The look-alike neighbours are the real trap.

#46,084
frequency rank, English
1,534
“N” headwords
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of negative differential conductance.

Corpus desk

Index EN-ndc · NDC · English

NDC · rank #46,084 · 0 variants · 20 confusables

  • FREQ-MID #46,084
  • LEN-MID 3 letters
  • VOW-0 0 vowels
  • CONFUS-HIGH 20 pairs
  • VAR-0 0 variants
  • BOOK-MID 1,534
  • PHOTO-FINISH NEET

Nearest frequency peer: NEET (+2 rank slots)

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Frequency neighbours of confusable “NDC”

Peers at similar corpus weight, separate from look-alike pairs below

corpus weight

What this shows Bars place “NDC” against nearest ranked English headwords, not a reprint of the confusable-pair desk.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

NDC vs ne
0% similar
NDC vs NJ
33% similar
NDC vs ni
0% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for NDC
PropertyValue
HeadwordNDC
LanguageEnglish
Part of speechNoun
Letters3
Frequency rank#46,084
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Corpus rank beside confusables of “NDC”

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).NDClands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Same rarity band neighbours include “NEET” (#46,086), “mothering” (#46,080), “nimbus” (#46,088). Among 1,534 “N” headwords, “NDC” is #46,084. Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for NDC is neighbouring look-alikes ("ne", "NJ", …), not just typos; it is anoun. Frequency #46,084 among 1,534 “N” headwords. 4 recorded senses keep meaning in play.

NDC doesn't appear in our generated misspelling index, which points to an orthography that plays by predictable English rules. It also participates in 20 confusable-pair relationships, "ne", "NJ", "ni", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

This headword's origin isn't recorded in our source data, so its spelling is easiest to reason about phoneme by phoneme, absent a documented history. The correct English form is NDC, spelled N-D-C.

Definition

  1. 1
    Initialism of negative differential conductance.
  2. 2
    Initialism of National Drug Code.
  3. 3
    Initialism of network daughter card.
  4. 4
    Initialism of nationally determined contribution.

Recorded use

Wiktionary example

These source excerpts show how NDC appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. “I don’t see that many new NDCs on the horizon, frankly,” he said, pointing to Australia, with its new government, as a rare exception.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "NDC"?
"NDC" is spelled N-D-C.
What does "NDC" mean?
As a noun, "NDC" means: Initialism of negative differential conductance.
What words are commonly confused with "NDC"?
"NDC" is commonly confused with "ne", "NJ", "ni". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What language does "NDC" come from?
"NDC" is a English word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "NDC", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 3 letters (nearest by frequency rank).

nog#46,089LLL#46,030JIT#46,007ies#45,988

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list