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Egg-shaped
Answer for the clue "Egg-shaped ", 4 letters:
ooid
Word definitions for ooid in dictionaries
Wiktionary
Word definitions in Wiktionary
a. Shaped like an egg; ovoid; ovate. n. (context geology English) A small calcium carbonate or iron coated grain found on the seafloor.
Wikipedia
Word definitions in Wikipedia
Ooids are small (≤2 mm in diameter), spheroidal, "coated" (layered) sedimentary grains, usually composed of calcium carbonate , but sometimes made up of iron - or phosphate -based minerals. Ooids usually form on the sea floor , most commonly in shallow ...