radar
nounA machine that uses radio waves to find where something far away is and how fast it is moving.
nounA piece of equipment or building that has a radar machine in it.
nounA good ability to notice or sense something that other people might miss.
Syllables
2 syllables
Letters
Phonics breakdown
Phonics Rule: Letter R
The letter R makes the /r/ sound, like in 'run', 'red', and 'rope'. The tongue curls back slightly.
R is a voiced approximant. The tongue curls back or bunches up without touching the roof of the mouth. When R follows a vowel it changes that vowel's sound (r-controlled vowels).
Tip
R is for run — /r/ with a curl of the tongue!
Examples
Phonics Rule: Open Syllable A (Long A)
When A is the last letter of a syllable, the syllable is open and the A says its name /eɪ/ — like in 'ba-by' and 'pa-per'.
This is the open-syllable pattern: a syllable that ends in a vowel leaves that vowel 'open', so it says its long name. Here, a lone A at the end of a syllable says /eɪ/ (ba-by, a-pron, lady). The long A sound is also spelled other ways, each its own rule — silent E (cake), or vowel teams (ai in rain, ay in play) — but those are not open syllables.
Tip
Long A says its name — A!
Examples
Phonics Rule: Letter 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: R-Controlled AR
When R comes after A, it changes the sound to /ɑːr/, like in 'car' and 'star'.
When A is followed by R, the R 'bosses' the vowel and changes its sound. Instead of short A or long A, you hear /ɑːr/. R-controlled vowels are sometimes called 'Bossy R'.
Tip
Bossy R takes the car to the farm!
Examples
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