Metric prefix for billionth WSJ Crossword Clue

By Narcissa Kh / December 29, 2025

Crossword Answer

1 ? N

2 ? A

3 ? N

4 ? O

Hint

Interactive Solver for Metric prefix for billionth Crossword Clue

Drag letters from the pool into “Your Answer”, then reorder them to match the solution.

Your Answer 4 Letter

Current guess: —

Letter Pool

Need a helpful nudge?

Unlock the puzzle's secrets with Daze's progressive hints!

Hint 1

hint

Reveal Hint

Think of something incredibly tiny, like the smallest building blocks of technology.

Hint 2

meaning

Reveal Hint

???? is a metric prefix meaning one billionth.

Hint 3

explanation

Reveal Hint

The clue asks for a metric prefix that denotes one billionth, which is '????.' In the metric system, '????-' is used to indicate a factor of 10^-9, or one billionth, often seen in terms like 'nanometer.'

Hint 4

another clue

Reveal Hint

Start for technology, Prefix with technology, Lead-in to second, iPod model introduced in 2005, Prefix meaning "one-billionth"

WSJ Crossword December 29 2025 Answers

Tap a cell to show its letter

1 ? A
2 ? L
3 ? A
4 ? S
5 ? T
6 ? S
7 ? K
8 ? M
9 ? I
10 ? N
11 ? T
12 ? S
13 ? C
? O
? R
? E
14 ? W
? I
? P
? E
15 ? U
? B
? O
? A
? T
16 ? E
? X
? C
? A
17 ? L
? I
? B
? U
? R
18 ? G
? E
? R
? M
? Y
19 ? O
? S
? I
? R
? I
20 ? S
21 ? R
? A
? I
? L
22 ? W
23 ? I
24 ? N
25 ? G
? S
? P
? A
? N
26 ? I
27 ? N
? I
? D
? L
? E
28 ? I
? D
? O
? L
? S
29 ? B
? R
? E
? A
30 ? N
? A
? N
? O
31 ? D
32 ? E
33 ? G
? R
? E
? E
34 ? V
35 ? I
36 ? C
37 ? C
? H
? O
? P
38 ? P
? E
? D
? S
? A
? N
? D
39 ? W
? I
? C
? H
40 ? E
? O
? S
41 ? O
? C
? E
? A
? N
? S
42 ? A
? S
? I
? A
43 ? I
? N
? O
? N
44 ? L
? I
? T
? E
? R
45 ? G
46 ? R
47 ? U
? N
? G
? Y
48 ? R
49 ? O
50 ? B
? O
? T
? A
? R
? M
51 ? R
? E
? N
? T
52 ? S
53 ? H
? E
? H
? E
? R
54 ? A
? C
? T
? O
55 ? R
56 ? T
? A
? B
? L
? E
57 ? F
58 ? L
59 ? I
60 ? P
61 ? M
? A
? I
? N
? E
62 ? T
? R
? O
? T
63 ? R
? I
? P
? E
64 ? S
? P
? E
? E
? D
65 ? P
? S
? Y
66 ? Y
? E
? A
? R

Across

“What a shame!” Crossword Clue

Breath-freshening candies Crossword Clue

13A

Innermost part Crossword Clue

15A

German submarine Crossword Clue

16A

Arthur gets it from the Lady of the Lake Crossword Clue

18A

Infectious, maybe Crossword Clue

19A

Egyptian god of the underworld Crossword Clue

21A

Banister, say Crossword Clue

22A

As much as 12 feet, for some albatrosses Crossword Clue

26A

Like a car at a stoplight, perhaps Crossword Clue

28A

Adored people Crossword Clue

29A

La ___ Tar Pits Crossword Clue

30A

Metric prefix for billionth Crossword Clue

31A

Temperature or angle unit Crossword Clue

34A

Rapper Mensa Crossword Clue

37A

Viral hero, and a description of what’s found in each set of circled letters Crossword Clue

41A

Blue areas on a globe Crossword Clue

42A

Where Bangalore, Bangkok and Beijing are Crossword Clue

43A

Privy to, as plans Crossword Clue

44A

Bottle size Crossword Clue

45A

Requiring a good scrubbing Crossword Clue

48A

Modern nonhuman surgeon Crossword Clue

51A

Tenant’s payment Crossword Clue

52A

Pronoun pair Crossword Clue

54A

Part player Crossword Clue

56A

Extreme reaction to frustration Crossword Clue

61A

Largest state in New England Crossword Clue

63A

Ready for harvesting Crossword Clue

64A

Tempo Crossword Clue

65A

___-ops (CIA trickery) Crossword Clue

66A

Decade tenth Crossword Clue

Down

Card without a face or a number Crossword Clue

Schmear go-with Crossword Clue

Circumference segment Crossword Clue

Blue area on a globe Crossword Clue

Lower leg bone Crossword Clue

Reject with disdain Crossword Clue

Coffee container Crossword Clue

Spain’s peninsula Crossword Clue

10D

“WarGames” org. Crossword Clue

11D

Language of Sri Lanka Crossword Clue

14D

Bit of hair or smoke Crossword Clue

17D

Tax write-off Crossword Clue

20D

Tornado warnings Crossword Clue

22D

Pained reaction Crossword Clue

23D

Pocatello’s state Crossword Clue

24D

Things to avoid Crossword Clue

25D

Formless food Crossword Clue

27D

Must have Crossword Clue

29D

Fiber source in cereal Crossword Clue

31D

Drakes that are fakes Crossword Clue

32D

Genesis setting Crossword Clue

33D

Org. that runs the USA.gov website Crossword Clue

34D

Scenic outlook Crossword Clue

35D

Less cordial Crossword Clue

36D

Bracelet dangler Crossword Clue

38D

Beer ___ (party pastime) Crossword Clue

39D

Bide one’s time Crossword Clue

43D

Chant Crossword Clue

44D

Handed-down tales Crossword Clue

45D

Metric mass units Crossword Clue

46D

Streaming show starter, often Crossword Clue

47D

Get the knots out of Crossword Clue

48D

Rises up on two legs, as a horse Crossword Clue

49D

“Goody!” Crossword Clue

50D

Suspenders alternative Crossword Clue

55D

Wine option Crossword Clue

57D

Make bacon, e.g. Crossword Clue

58D

It’s not true Crossword Clue

59D

Pub brew letters Crossword Clue

Clue Analysis

The clue “Metric prefix for billionth” is a classic crossword staple, frequently appearing in puzzles like the WSJ crossword. For the puzzle dated December 29 2025, the definitive 4-letter answer is: NANO.

Expert Tip: When you’re stuck, try to analyze the structure of the clue itself. Is it a direct definition, a pun, a fill-in-the-blank, or a pop culture reference? Identifying the type of clue you’re dealing with is a key skill for improving your solving speed.

Finished the WSJ Puzzle? Check out this link for future puzzles:

WSJ Crossword Answers

Play the Official Game

Play Online in Wall Street Journal

Your Questions, Answered by Experts.

At Daze Puzzle, we understand that every clue is a puzzle within a larger puzzle. Our team of dedicated human experts and puzzle lovers solves these challenges daily to help you succeed. Below, we answer common questions about this specific clue.

A: The most common and recent 4-letter answer for "Metric prefix for billionth" is NANO.

A: The clue asks for a metric prefix that denotes one billionth, which is 'nano.' In the metric system, 'nano-' is used to indicate a factor of 10^-9, or one billionth, often seen in terms like 'nanometer.'

A: This clue was last seen in the WSJ Crossword on December 29, 2025.

A: Nano is a metric prefix meaning one billionth.

A: Start for technology, Prefix with technology, Lead-in to second, iPod model introduced in 2005, Prefix meaning "one-billionth"

Today's Crossword Answers

Want more help on other popular crossword puzzles? Try it now!

Metric prefix for billionth WSJ Crossword Clue

Crossword Answer

Interactive Solver for Metric prefix for billionth Crossword Clue