Petri dish substance WSJ Crossword Clue
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The most common and recent 4-letter answer for "Petri dish substance" is AGAR.
The clue 'Petri dish substance' refers to a gel-like substance used in microbiology to culture bacteria. Agar is a common medium poured into Petri dishes to provide nutrients and support for microbial growth.
This clue was last seen in the WSJ Crossword on June 08, 2026.
Agar is a gelatinous substance derived from seaweed, used as a medium for bacterial cultures.
thickener from algae, Gelatin substance, Japanese gelatin, Biology lab gel, Petri dish goo
The clue “Petri dish substance” is a classic crossword staple, frequently appearing in puzzles like the WSJ crossword. For the puzzle dated June 8 2026, the definitive 4-letter answer is: AGAR.
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