tannic acid
noun
: tannin sense 1
Example Sentences
Recent Examples on the Web Add a pinch of baking soda to neutralize the tannic acid in the brew. 
Jenny Comita, Better Homes & Gardens, 16 Apr. 2021 Don’t worry about the tannic acid in the leaves, our alkaline, highly buffered soils are not negatively affected. Calvin Finch, ExpressNews.com, 2 Jan. 2020 Ground gall nuts, taken from an oak-like tree, were boiled to draw out tannic acid, which was mixed with iron sulfate scraped from nails. Joe Pappalardo, Popular Mechanics, 3 July 2019 Used tea grounds and fresh tea leaves contain nutrients and tannic acid that, when added to the soil, create a more fertile environment for garden, landscape and container plants. OregonLive.com, 10 Feb. 2018
Jenny Comita, Better Homes & Gardens, 16 Apr. 2021 Don’t worry about the tannic acid in the leaves, our alkaline, highly buffered soils are not negatively affected. Calvin Finch, ExpressNews.com, 2 Jan. 2020 Ground gall nuts, taken from an oak-like tree, were boiled to draw out tannic acid, which was mixed with iron sulfate scraped from nails. Joe Pappalardo, Popular Mechanics, 3 July 2019 Used tea grounds and fresh tea leaves contain nutrients and tannic acid that, when added to the soil, create a more fertile environment for garden, landscape and container plants. OregonLive.com, 10 Feb. 2018 Word History
First Known Use
1836, in the meaning defined above
Medical Definition
tannic acid
noun
tan·nic acid ˌtan-ik- 
1
: a tannin occurring especially in extracts from nutgalls and yielding gallic acid on hydrolysis
called also digallic acid, gallotannic acid, gallotannin
2
: tannin sense 1
- endure past
- endured
- endured (past)
- endured past
- endurer
- endurers
- endures
- endures (past)
- endures past
- enduring
- enduring (past)
- jewel boxes
- Jewel Cave National Monument
- jewel cloth
- jewel fish
- jewel in the crown
- jewel tone
- jeweled
- jeweler
- jewelers
- jewelers' block insurance
- jewelers' putty
- jewelers' rouge
- jewelfishes
- jeweling