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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

Reforming and rehabilitating them, ach, less bothered about that.

From The Guardian Apr. 23, 2017

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

It is the power of perfection for us to-day. ach high achievement is a sign and token of the whole nature's possibility.

From Heart's-ease by Brooks, Phillips

But town Finance Director Melanie Gruber said the ACH form didn’t raise suspicions.

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

Since this data is needed to process payments and post them to customer accounts, a lot of ACH payments were delayed.

From Seattle Times Nov. 7, 2023

ACH, I tell you, she look like the Frau Tellamantez, some-thing.

From The Song of the Lark by Cather, Willa Sibert

As ACh binds at the motor end plate, this depolarization is called an end-plate potential.

From Textbooks Jun. 9, 2022

Figure 10.6 Motor End-Plate and Innervation At the NMJ, the axon terminal releases ACh.

From Textbooks Jun. 19, 2013

Postganglionic sympathetic fibers release norepinephrine, with a minor exception, whereas postganglionic parasympathetic fibers release ACh.

From Textbooks Jun. 19, 2013

When ACh molecules are released, they diffuse across a minute space called the synaptic cleft and bind to the 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

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