: a rounded thick modified underground stem base bearing membranous or scaly leaves and buds and acting as a vegetative reproductive structure compare bulb, tuber

Examples of corm in a Sentence

Recent Examples on the Web Gladiola corms and dahlia tubers: Let the first frost cause dieback and then dig them. Jeff Lowenfels, Anchorage Daily News, 7 Sep. 2023 This family's members are perennial plants with bulbs, corms, or rhizomes. Elizabeth Waddington, Treehugger, 28 Aug. 2023 The Domes received a gift of a dormant corm — similar to a bulb or tuber — about 15 years ago from the University of Wisconsin and have since grown 10 corpse flower corms from the original. Sophie Carson, Journal Sentinel, 14 July 2023 If a corm lacks a point, look for the little root scars on the bottom of the corm and place them with that side facing down. Nicole Bradley, Better Homes & Gardens, 20 Sep. 2022 Look for the remnants of roots from last season, and place the corm root-side down in a hole so that the top of the corm is about an inch below the soil. Arricca Elin Sansone, Country Living, 18 Mar. 2021 Flowers to start from seed: Dianthus, larkspur, stock, asters, nicotiana, cleome, annual ice plant, zinnia, salpiglossis, snaps, cosmos, lupine, malva. Tubers and corms: Start tuberous begonias and dahlias. Jeff Lowenfels | Alaska Gardening and Growing, Anchorage Daily News, 30 Mar. 2023 Cold, wet conditions make corms more likely to rot. oregonlive, 2 Apr. 2023 This cycle repeats for about 3 to 5 years before the original corm decays, leaving behind new bulbs to be planted. Aakash Hassan, The Christian Science Monitor, 6 Feb. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'corm.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


borrowed from New Latin cormus, borrowed from Greek kormós "tree trunk after removal of the boughs," from kor-, o-grade derivative from the base of keírein "to cut off, shave" + -mos, resultative noun suffix — more at shear entry 1

First Known Use

1830, in the meaning defined above

Time Traveler
The first known use of corm was in 1830

Dictionary Entries Near corm

Cite this Entry

“Corm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/corm. Accessed 19 Apr. 2024.

Kids Definition


: a solid underground part of a stem (as of the crocus) that is shaped like a bulb compare bulb sense 1a, tuber sense 1

Medical Definition


: a rounded thick modified underground stem base bearing membranous or scaly leaves and buds and acting as a vegetative reproductive structure

More from Merriam-Webster on corm

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!