VOOZH

URL: https://www.merriam-webster.com/dictionary/porta

⇱ Porta | Definition & Meaning - Merriam-Webster

“porta”

We have one entry that includes the term porta.

Porta cipher

noun

: polyalphabetic substitution with reciprocal alphabets formed by sliding the second half of a normal alphabetic sequence against the first half

See the full definition

Word of the Day

orthography

👁 Listen to the pronunciation of orthography

See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

Commonly Confused Words Quiz

👁 vector image of a face with thought expression
I went to the ______ store to buy a birthday card.

stationary stationery

Hear a word and type it out. How many can you get right?

👁 Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.

Pick the best words!

PLAY

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Merriam-Webster unabridged

Games & Quizzes

👁 Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.

Quordle Can you solve 4 words at once?

👁 Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.

Blossom Pick the best words!

👁 Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?

The Missing Letter A daily crossword with a twist

👁 union jack speech bubble

The Great British Vocabulary Quiz Make sure you know the difference between a loo a...