Effects of the storage conditions on the stability of natural and synthetic cannabis in biological matrices for forensic toxicology analysis: An update from the literature

The grapheme Ȓ (lower case ȓ) is a letter used in the Iñupiaq language and discussion of Serbo-Croatian and Slovene phonology and poetics.^[1] The diacritical mark is an inverted breve or arch.

References

The letter R
General	Rhotic consonants (R-like sounds) Perception of English /r/ and /l/ by Japanese speakers Pronunciation of English /r/ Rhoticity in English R-colored vowel Rhotacism Guttural R Linking and intrusive R
Pronunciations	Voiceless alveolar trill [r̥] Voiced alveolar trill [r] Voiced alveolar or postalveolar approximant [ɹ] Voiceless alveolar tap [ɾ̥] Voiced alveolar tap [ɾ] Voiced alveolar lateral flap [ɺ] Voiced retroflex approximant [ɻ] Voiced retroflex flap [ɽ] Voiced retroflex trill [ɽr] Voiced velar approximant [ɰ] Voiced velar bunched approximant [ɹ̈] Voiceless velar fricative [x] Voiced velar fricative [ɣ] Voiceless uvular trill [ʀ̥] Voiced uvular trill [ʀ] Voiceless uvular fricative [χ] Voiced uvular fricative [ʁ] Voiced pharyngeal fricative [ʕ] Voiceless glottal fricative [h] Voiced glottal fricative [ɦ]
Variations	Ꝛꝛ (R rotunda) Ꞃꞃ (Insular) Ɽɽ (R with tail) Ɍɍ (R with stroke) Ʀʀ Ȑȑ Ŕŕ Ŗŗ Řř Ȓȓ R̃r̃ Ṙṙ Ṛṛ R̄r̄ Ṝṝ Ṟṟ Rd Rh Rl Rm Rn Rp Rr Rs Rt Rw Rz Rnd ᚱ (Raidô) ℝ (Real number) ® (Registered trademark symbol) Ⓡ (Enclosed R) ℞ (Medical prescription)