diameter
Pronounceddeye-A-muh-ter
A straight line that goes across the middle of a circle from one side to the other.
Syllables
4 syllables
Letters
Phonics breakdown
Phonics Rule: Letter D
Sound“d”·/d/
The letter D makes the /d/ sound, like in 'dog', 'day', and 'dig'. The tongue tip touches behind the upper teeth.
D is a voiced alveolar stop. The tongue tip touches the ridge just behind the upper front teeth, then releases with voice. It reliably makes the /d/ sound in almost all positions.
Tip
D is for dog — and dog starts with /d/!
Examples
Phonics Rule: Open Syllable I (Long I)
Sound“eye”·/aɪ/
When I is the last letter of a syllable, the syllable is open and the I says its name “eye” — like in 'hi' and 'fi-nal'.
This is the open-syllable pattern: a syllable that ends in a vowel leaves it 'open', so it says its long name. Here, a lone I at the end of a syllable says “eye” (hi, si-lent). The I also says its long name before two consonants in the 'ind' and 'ild' families (find, kind, child, mild). The long I sound is also spelled other ways, each its own rule — silent E (bike) or igh (night) — but those are not open syllables.
Tip
Long I says its name — I!
Examples
When the letter A appears in a closed syllable (a syllable that ends with a consonant), it usually makes the short A sound “a”. This is one of the first vowel sounds students learn.
Tip
A says “a” like a cat that sat on a mat.
Examples
Phonics Rule: Letter M
Sound“m”·/m/
The letter M makes the /m/ sound, like in 'map', 'mud', and 'mop'. Both lips press together with voice through the nose.
M is a voiced bilabial nasal — both lips press together while the voice hums through the nose. Double M (mm) makes the same /m/ sound.
Tip
M hums like mmm — press your lips and hum!
Examples
Phonics Rule: Schwa
Sound“uh”·/ə/
In unstressed syllables, vowels often make a lazy 'uh' sound called schwa, like the A in 'about'.
Schwa “uh” is the most common vowel sound in English. Any vowel letter can make the schwa sound when it's in an unstressed syllable. It sounds like a quick, lazy 'uh'.
Tip
Schwa is lazy — any vowel can say 'uh' when it's not stressed!
Examples
Phonics Rule: Letter T
Sound“t”·/t/
The letter T makes the /t/ sound, like in 'top', 'tap', and 'ten'. The tongue tip taps behind the upper teeth.
T is a voiceless alveolar stop. The tongue tip touches the ridge behind the upper teeth and releases with a puff of air. Double T (tt) makes the same /t/ sound.
Tip
T taps — touch your tongue to make /t/!
Examples
Phonics Rule: Suffix -ER
Sound“er”·/ɜːr/
Adding -ER can mean 'more' (bigger) or 'a person who' (teacher).
The suffix -er has two main uses: comparative ('big' → 'bigger' = more big) and agent ('teach' → 'teacher' = a person who teaches).
Examples
What is SnapPhonics?
A phonics reference for teachers, parents and learners. Every English word, broken into the sounds that make it — with audio, syllables, and the rule behind each spelling.
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