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MOLYBDENUM

/məˈlɪbdɪnəm/10 letters

Definition of MOLYBDENUM

noun

A chemical element (symbol Mo) with an atomic number of 42: a silvery metal, not found as a free element, used in steel alloys.

Wiktionary · CC BY-SA

Where it comes from

From New Latin molybdaenum, from molybdaena (“any of various substances resembling lead”), from Ancient Greek μολύβδαινα (molúbdaina, “a plummet, piece of lead”), from μόλυβδος (mólubdos, “lead; graphite”), from an Anatolian word cognate with Lydian 𐤪𐤠𐤭𐤦𐤥𐤣𐤠 (mariwda, “dark”), from Proto-Indo-European *morkʷ-iyo-, from a root *morkʷ- (“dark”), cognate with English murk. Cf. Latin plumbum nigrum 'lead'. The suffix is + -um (“a chemical element”). Attested since the last quarter of 18th century.

Etymology via Wiktionary (CC BY-SA).

Word DNA

Line of descent

  1. Proto-Indo-European
  2. Ancient Greek
  3. Latin
  4. English

3 recorded generations before English.

Proto-Indo-European

Deepest traced root

2nd

of 59 source languages in OUTLIER

14.2%

of traced words share this origin (12,230)

How it is built

noun4 syllablescompound-um

Same root, MOLYBDENUM · 5 relatives in the game

Every Proto-Indo-European word → · The Word DNA of OUTLIER →

Rarity score
Withheld
Revealed only in play
Tier
Withheld
Find it yourself

OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.

MOLYBDENUM in OUTLIER

Players have found it on 2 boards so far. 19 players have found it across Outlier's history.

Day 1Day 176
Its 2 boards, across 176 finished boards · taller bars are busier boards
2
Boards found on
166
First board
172
Latest board
6
Longest gap, days

It first turned up on Day 166, 2 November 2026. The most recent board was Day 172, 8 November 2026. Nobody has seen it on a board for 4 days.

First ever to find it

infinite

on Day 166, 2 November 2026 - before anyone else in Outlier's history. See the Pioneers

Built from these letters

MOLYBDENUM
10
Letters
3
Vowels
7
Consonants
9
Different letters
4
Longest consonant run
1
Longest vowel run

MOLYBDENUM starts with M and ends with M. Sorted, its letters read BDELMMNOUY - the shape to hunt for when the grid is scrambled. M appears more than once.

Words that start MOLYBD

Its neighbours in the OUTLIER dictionary - shortest first.

Could you have found MOLYBDENUM?

OUTLIER is a daily word game. One grid, the same grid for everybody, and the words nobody else spots are the ones that pay. This word was on Day 166 - and most players walked straight past it.

Play today's OUTLIER