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  • ach
    ach
    interjection
    alas; oh.
  • ACH
    ACH
    abbreviation
    automated clearing houseclearinghouse: a large computer network that transfers batches of electronic funds directly between financial institutions without the use of cash, credit cards, or paper checks, thus reducing fees and enabling faster transactions, such as for recurring bill payments, direct deposit, etc.
  • ACh
    ACh
    abbreviation

ach

1 American  
[ahkh] / ɑx /

interjection

German.
  1. alas; oh.


ACH 2 American  

abbreviation

  1. automated clearing houseclearinghouse: a large computer network that transfers batches of electronic funds directly between financial institutions without the use of cash, credit cards, or paper checks, thus reducing fees and enabling faster transactions, such as for recurring bill payments, direct deposit, etc.

  2. Automated Clearing House Network: the national computer network for processing electronic funds transfers between financial institutions in the United States.


ACh 3 American  

abbreviation

Biochemistry.
  1. acetylcholine.


ach British  
/ ɑːx /

interjection

  1. Also: och.  an expression of surprise, impatience, disgust, etc

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

“I would just love to take every ach and pain his heart and mind has to endure. Holding him tight as I say everything is gonna eventually be better then now.”

From Washington Post Feb. 19, 2020

If City win their last eight gam- ach, no, the best they can do is probably second now.

From The Guardian Apr. 2, 2016

The man in the street may claim to oppose unconditional aid to Pyongyang, but he has little stom ach for tension.

From Newsweek Apr. 15, 2013

Russell to the net, stretching volley… ach, framed into the tape.

From BBC Jun. 20, 2011

"Ach so!" said Frau von Treumann, "ach so-o-o-o!"—a long drawn out so of complete comprehension.

From The Benefactress by Elizabeth

It isn’t unusual for a vendor to switch from check to ACH, Town Administrator Gerry Vincent noted.

From The Wall Street Journal Jul. 21, 2026

The companies offering cash advances and access to earned wages know people are revoking ACH access to stop repayment on their loans.

From MarketWatch Feb. 12, 2026

Similar protection services are offered for ACH or transactions that are debited directly from a business bank account.

From New York Times Jan. 7, 2024

MacSweeney told The Charlotte Observer in an email statement on Monday that some ACH payment instructions were sent to financial institutions with account numbers and names of customers hidden to protect information.

From Seattle Times Nov. 7, 2023

"ACH, DAS MISTBEET!" gasped Paulina, hearing her hotbed shivered.

From The Song of the Lark by Willa Sibert Cather

Once released by the synaptic terminal, ACh diffuses across the synaptic cleft to the motor end plate, where it binds with ACh receptors.

From Textbooks Jun. 9, 2022

The postganglionic connections to sweat glands in the skin and blood vessels supplying skeletal muscle are, however, exceptions; those fibers release ACh onto muscarinic receptors.

From Textbooks Jun. 19, 2013

The ACh molecules diffuse across a minute space called the synaptic cleft and bind to ACh receptors located within the motor end-plate of the sarcolemma on the other side of the synapse.

From Textbooks Jun. 19, 2013

This is similar to ACh that binds to both types of receptors.

From Textbooks Jun. 19, 2013

The postganglionic sympathetic fibers that contact the blood vessels within skeletal muscle and that contact sweat glands do not release norepinephrine, they release ACh.

From Textbooks Jun. 19, 2013

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