photosynthesis
Pronouncedfoh-toh-SIHN-thuh-sihs
How plants use sunlight to make their own food and grow.
Syllables
5 syllables
Letters
Related words (same phonics pattern)
Phonics breakdown
Phonics Rule: PH Digraph
Sound“f”·/f/
PH makes the /f/ sound, like in 'phone' and 'photo'. It comes from Greek!
The digraph 'ph' always makes the /f/ sound. These words usually come from Greek. If you see PH, just say /f/.
Tip
PH phones home with an /f/ sound!
Examples
Phonics Rule: Open Syllable O (Long O)
Sound“oh”·/oʊ/
When O is the last letter of a syllable, the syllable is open and the O says its name “oh” — like in 'go' and 'no'.
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 O at the end of a syllable says “oh” (go, no, so, o-pen). The O also says its long name in the 'old' and 'ost' families (cold, most). The long O sound is also spelled other ways, each its own rule — silent E (home) or vowel teams (oa in boat, ow in snow) — but those are not open syllables.
Tip
Long O says its name — O!
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: Open Syllable O (Long O)
Sound“oh”·/oʊ/
When O is the last letter of a syllable, the syllable is open and the O says its name “oh” — like in 'go' and 'no'.
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 O at the end of a syllable says “oh” (go, no, so, o-pen). The O also says its long name in the 'old' and 'ost' families (cold, most). The long O sound is also spelled other ways, each its own rule — silent E (home) or vowel teams (oa in boat, ow in snow) — but those are not open syllables.
Tip
Long O says its name — O!
Examples
Phonics Rule: Letter S
Sound“s”·/s/
The letter S usually makes the /s/ sound, like in 'sun', 'sit', and 'sock'. Air hisses through a small gap.
S is a voiceless alveolar fricative when it makes the /s/ sound. At the end of many words it can also make a /z/ sound (as in 'dogs' or 'has'). At the start of a word it is always /s/.
Tip
S hisses like a snake — sssssun!
Examples
Phonics Rule: Y as Short I
Sound“ih”·/ɪ/
Y can act as a vowel making the short “ih” sound, like in 'gym' and 'myth'.
When Y is the only vowel in a syllable, it often says short “ih” — common in Greek-origin words: gym, myth, system, symbol, crystal, mystery.
Tip
Y says short i — gym, myth, system!
Examples
Phonics Rule: NT End Blend
Sound“nt”·/nt/
NT at the end of a syllable blends /n/ and /t/ together, like in 'tent', 'mint', and 'want'.
NT is a very common end blend. The nasal /n/ flows into the stop /t/. In fast speech the /t/ is sometimes barely voiced, but both sounds are present.
Tip
NT tents up at the end — tent, mint, hunt!
Examples
Phonics Rule: Letter H
Sound“h”·/h/
The letter H makes the /h/ sound, like in 'hat', 'hop', and 'hen'. It is a soft breath of air.
H is a voiceless glottal fricative — just a puff of air with no friction. It always appears before a vowel and is sometimes silent (as in 'hour' or 'honest').
Tip
H is a puff of air — breathe out and say /h/!
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 S
Sound“s”·/s/
The letter S usually makes the /s/ sound, like in 'sun', 'sit', and 'sock'. Air hisses through a small gap.
S is a voiceless alveolar fricative when it makes the /s/ sound. At the end of many words it can also make a /z/ sound (as in 'dogs' or 'has'). At the start of a word it is always /s/.
Tip
S hisses like a snake — sssssun!
Examples
When the letter I appears in a closed syllable, it usually makes the short I sound “ih”. This is one of the trickiest short vowels because it sounds similar to short E.
Tip
I says “ih” like an itch you can't miss.
Examples
Phonics Rule: Plural -S (/z/ sound)
Sound“z”·/z/
After a buzzing sound or a vowel, the plural ending says /z/ — like 'dogs' and 'shoes'.
Put a finger on your throat and say 'zzzz' — you feel a buzz. When the word ends in a buzzing (voiced) sound or a vowel, the plural ending buzzes too and says /z/. This happens whether the word is spelled -s (dogs) or -es (shoes, trees), because in shoes the e is silent and only the s is sounded. Most people never notice they are doing this.
Examples
What is SnapPhonics?
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