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 (strĕngk′thən, strĕng′-, strĕn′-)
v. strength·ened, strength·en·ing, strength·ens
To make strong or increase the strength of.
To become strong or stronger.

strength′en·er n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.strengthener - a device designed to provide additional strength; "the cardboard backing was just a strengthener"; "he used gummed reinforcements to hold the page in his notebook"
backing, mount - something forming a back that is added for strengthening
bracing, brace - a structural member used to stiffen a framework
brace - a support that steadies or strengthens something else; "he wore a brace on his knee"
device - an instrumentality invented for a particular purpose; "the device is small enough to wear on your wrist"; "a device intended to conserve water"
safety arch - an undecorated arch that is included in order to strengthen or support a construction
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in classic literature ?
An advantage this, a strengthener of love, in which even the conjugal tie is beneath the fraternal.
The sons, in short square-skirted coats, with rows of stupendous brass buttons, and their hair generally queued in the fashion of the times, especially if they could procure an eelskin for the purpose, it being esteemed throughout the country as a potent nourisher and strengthener of the hair.
The strengtheners and the lowerers were all "clever" men in somebody's opinion, which is really as much as can be said for any living talents.
Shavata Singh, founder of Shavata Brow Studio, says: "If our clients want to grow their brows, we advise them to use the Shavata Brow Strengthener every night before bed.
RevitaLash Hi-Def Tinted Brow Gel, PS32 Shavata Singh, founder of Shavata Brow Studio, said: "If our clients want to grow their brows, we advise them to use the Shavata Brow Strengthener every night before bed.
Solutions include DigiGuard 901 UV OPV strengthener (an OPV additive), DigiPrime 022 and DigiGuard 222.
Caption: The psoas strengthener, at right, can help prep you for the Horton coccyx balance or V-sits, like the Pilates teaser, so you can perform them without gripping.
Five new products have been launched in 2017: BB Jamaican Black Castor Oil, BB Shea Castor Strengthener, BB Hydrating Growth Oil, BB Mango Butter Curl Enhancer and BB Firm Hold Curling Gel.
And after a bit of over-zealous tweezer action we have been relying on her roll-on Brow Strengthener, left.
I have, however, been using this ProHands Tactical hand strengthener (retail $44.95) for a couple months, ever since reviewing it on American Handgunner online. THE NAILS SALLY HANSON GREEN TEA + BAMBOO NAIL STRENGTHENER PS7.99 Thumbs up for healthier more resilient nails.

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