a chinlike protuberance formed by the sepals and the base of the column in some orchids
Word origin
[1685–95; ‹ NL, L mentum chin, akin to mouth]This word is first recorded in the period 1685–95. Other words that entered Englishat around the same time include: accumulator, align, converge, fatigue, sideline
Examples of 'mentum' in a sentence
mentum
Those variations, however, were negligible in comparison to mentum shape changes due to genetic effects.
Hélène Arambourou, Jean-Nicolas Beisel, Philippe Branchu, Vincent Debat 2012, 'Patterns of fluctuating asymmetry and shape variation in Chironomus riparius (Diptera,Chironomidae) exposed to nonylphenol or lead.', PLoS ONEhttp://europepmc.org/articles/PMC3487765?pdf=render. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Slight effects on mentum shape fluctuating asymmetry were observed for two stressed groups.
Hélène Arambourou, Jean-Nicolas Beisel, Philippe Branchu, Vincent Debat 2012, 'Patterns of Fluctuating Asymmetry and Shape Variation in Chironomus riparius (Diptera,Chironomidae) Exposed to Nonylphenol or Lead', PLoS ONE10.1371/journal.pone.0048844. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The average frequency of mentum deformity obtained was 6,63%.
Mariana Silveira Guerra Moura e Silva, Ana Lúcia Silva Marigo, William Viveiros, MônicaLuisa Kuhlmann 2019, 'Frequency of mentum deformity in Chironomus sancticaroli (Diptera: Chironomidae) ina laboratory culture', Revista Ambiente & Águahttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1980-993X2019000200316&lng=en&nrm=iso&tlng=en. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
They were identified and the incidence of deformities in the mentum was quantified.
Wanessa Deliberalli, Rogério L. Cansian, Albanin A. M. Pereira, Rafael C. Loureiro,Luiz U. Hepp, Rozane M. Restello 2018, 'The effects of heavy metals on the incidence of morphological deformities in Chironomidae(Diptera)', Zoologia (Curitiba)http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702018000100316&lng=en&tlng=en. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Only the lengths of the paraglossa, stipe, galea, mentum, prementum and maxillary palpus differed significantly between thesetwo bee types.
Pignata Maria Izabel Barnez, Stort Antonio Carlos, Malaspina Osmar 1998, 'Study of the length of the mouthparts of Africanized, Caucasian and Africanized/Caucasianhoney bee crosses, and relationships between glossa size and food gathering behavior',Genetics and Molecular Biologyhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47571998000400010. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)