invasive

adjective
in·​va·​sive | \ in-ˈvā-siv How to pronounce invasive (audio) , -ziv\

Definition of invasive

 (Entry 1 of 2)

1 : tending to spread especially in a quick or aggressive manner: such as
a of a nonnative organism : growing and dispersing easily usually to the detriment of native species and ecosystems It will be the second Australian insect released to thwart melaleuca, one of many exponentially spreading invasive plants that out-compete native Florida species, monopolizing wetlands and natural areas.— Neil Santaniello Scientists say more than 150 invasive species have entered the Great Lakes, multiplying rapidly and feeding on native species or outcompeting with them for food.— Sophia Taren
b(1) of cancer cells : tending to infiltrate surrounding healthy tissue … this procedure preserves the architecture of the tissue sample, which is vital for determining whether tumor cells are invasive.— Andrew A. Skolnick
(2) of a pathogenic microorganism or disease : disseminating from a localized area throughout the body sepsis association with invasive bacteria invasive streptococcal infection
2 : involving entry into the living body (as by incision or by insertion of an instrument) invasive diagnostic techniques
3 : of, relating to, or characterized by military aggression
4 : tending to infringe

invasive

noun

Definition of invasive (Entry 2 of 2)

: an organism that is not native to the place where found and tends to grow and spread easily usually to the detriment of native species and ecosystems Zebra mussels are the latest in a series of aquatic invasives to threaten Texas' inland waters.— Shannon Tompkins

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Other Words from invasive

Adjective

invasiveness noun

Examples of invasive in a Sentence

Recent Examples on the Web: Adjective

In her essay for The New Yorker published yesterday, Clarke revealed that she was hospitalized for a brain aneurysm in 2011, after filming the first season of Game of Thrones, and was treated with a minimally invasive surgery. Erica Gonzales, Harper's BAZAAR, "Lena Headey Supports Game of Thrones Co-Star Emilia Clarke After She Opened Up About Her Brain Aneurysms," 22 Mar. 2019 Beyond hacking protection, Sen says, the technology could allow for doctors to reprogram medical devices without the need for any invasive surgery. David Grossman, Popular Mechanics, "Scientists Design a Network That Lives Inside Your Body," 13 Mar. 2019 She was treated with steroids for over a year and had a biopsy that revealed the tumor to be benign, which meant that invasive surgery would not be necessary. Gavanndra Hodge, WSJ, "Claire Foy Steps Into the Spotlight," 9 Jan. 2019 Definitively diagnosing the disorder requires invasive surgery; doctors need to peer inside the pelvis through a laparoscopy. Julia Belluz, Vox, "Women with endometriosis suffer terrible pain. There’s finally a new treatment option.," 24 July 2018 Why would my doctor recommend a highly invasive, irreversible surgery without knowing my [most] recent labs or discussing my habits? Rebecca Scritchfield, chicagotribune.com, "What if physicians stopped weighing heavier patients? Health care might improve," 20 June 2018 Physicians like the da Vinci for its precision and for its ability to work with smaller instruments, making surgery less invasive than traditional methods. Zoie Matthew, Los Angeles Magazine, "How a USC Program Is Trying to Make Robotic-Assisted Surgeries Safer," 3 Apr. 2018 In this World Economic Forum discussion, Carnegie Mellon roboticist Howard Choset shows how snake-like robots can perform minimally invasive surgeries, decreasing cost and patient recovery time. Phuc Pham, WIRED, "Sophisticated Tools Lead to Breakthroughs in Prenatal Surgery," 27 Mar. 2018 Cantin's company, NDS Surgical Imaging, developed some of the medical industry's earliest digital imaging technologies for minimally invasive surgery. CBS News, "Sisters among victims of California mudslides," 15 Jan. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'invasive.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of invasive

Adjective

1598, in the meaning defined at sense 3

Noun

1990, in the meaning defined above

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Statistics for invasive

Last Updated

30 Apr 2019

Look-up Popularity

Time Traveler for invasive

The first known use of invasive was in 1598

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More Definitions for invasive

invasive

adjective

English Language Learners Definition of invasive

: tending to spread
medical : involving entry into the body by cutting or by inserting an instrument

invasive

adjective
in·​va·​sive | \ -siv, -ziv How to pronounce invasive (audio) \

Medical Definition of invasive

1 : tending to spread especially : tending to invade healthy tissue invasive cancer cells
2 : involving entry into the living body (as by incision or by insertion of an instrument) invasive diagnostic techniques

Other Words from invasive

invasiveness noun

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More from Merriam-Webster on invasive

Rhyming Dictionary: Words that rhyme with invasive

Spanish Central: Translation of invasive

Nglish: Translation of invasive for Spanish Speakers

Britannica English: Translation of invasive for Arabic Speakers

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